1. WeatherSpark.com
  2. Canada
  3. British Columbia

Climate and Average Weather Year Round in Coquitlam British Columbia, Canada

In Coquitlam, the summers are comfortable and partly cloudy and the winters are very cold, wet, and overcast. Over the course of the year, the temperature typically varies from 32°F to 77°F and is rarely below 19°F or above 87°F.

Based on the tourism score, the best time of year to visit Coquitlam for warm-weather activities is from mid July to mid August.

Climate in Coquitlam

coldcoolcomfortablewarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow69%69%24%24%overcastclearprecipitation: 10.7 inprecipitation: 10.7 in1.2 in1.2 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 6.5tourism score: 6.50.00.0
Coquitlam weather by month. Click on each chart for more information.

The warm season lasts for 3.0 months, from June 15 to September 13, with an average daily high temperature above 70°F. The hottest month of the year in Coquitlam is July, with an average high of 76°F and low of 55°F.

The cold season lasts for 3.4 months, from November 13 to February 24, with an average daily high temperature below 48°F. The coldest month of the year in Coquitlam is December, with an average low of 33°F and high of 42°F.

Average High and Low Temperature in Coquitlam

Average High and Low Temperature in CoquitlamwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 241°FJan 241°FJul 3177°FJul 3177°F32°F32°F56°F56°FJun 1570°FJun 1570°FSep 1370°FSep 1370°FNov 1348°FNov 1348°FFeb 2448°FFeb 2448°F52°F52°F51°F51°F38°F38°F34°F34°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 43°F47°F52°F58°F65°F70°F76°F76°F69°F58°F48°F42°F
Temp. 37°F39°F43°F48°F55°F60°F65°F64°F59°F50°F42°F36°F
Low 32°F33°F37°F41°F47°F52°F55°F55°F50°F44°F38°F33°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Coquitlam

Average Hourly Temperature in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Sézanne, France (4,960 miles away) is the far-away foreign place with temperatures most similar to Coquitlam (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Coquitlam to another city:

Map

In Coquitlam, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Coquitlam begins around June 14 and lasts for 3.4 months, ending around September 28.

The clearest month of the year in Coquitlam is August, during which on average the sky is clear, mostly clear, or partly cloudy 65% of the time.

The cloudier part of the year begins around September 28 and lasts for 8.6 months, ending around June 14.

The cloudiest month of the year in Coquitlam is January, during which on average the sky is overcast or mostly cloudy 75% of the time.

Cloud Cover Categories in Coquitlam

Cloud Cover Categories in CoquitlamclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 269%Aug 269%Jan 1924%Jan 1924%Jun 1447%Jun 1447%Sep 2847%Sep 2847%NowNowclearpartly cloudymostly cloudyovercastmostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 75%72%71%66%58%52%36%35%46%63%74%75%
Clearer 25%28%29%34%42%48%64%65%54%37%26%25%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Coquitlam varies significantly throughout the year.

The wetter season lasts 6.5 months, from October 7 to April 22, with a greater than 37% chance of a given day being a wet day. The month with the most wet days in Coquitlam is November, with an average of 18.1 days with at least 0.04 inches of precipitation.

The drier season lasts 5.5 months, from April 22 to October 7. The month with the fewest wet days in Coquitlam is August, with an average of 4.5 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Coquitlam is November, with an average of 17.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 60% on November 8.

Daily Chance of Precipitation in Coquitlam

Daily Chance of Precipitation in CoquitlamwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 1762%Nov 1762%Aug 412%Aug 412%Oct 737%Oct 737%Apr 2237%Apr 2237%NowNowrainmixed
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 13.7d12.6d14.8d12.1d9.5d8.3d5.1d4.5d7.5d13.8d17.4d15.4d
Mixed 2.0d1.2d0.4d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.4d1.3d
Snow 0.7d0.3d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.3d0.7d
Any 16.5d14.1d15.2d12.1d9.5d8.3d5.1d4.5d7.5d13.8d18.1d17.4d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Coquitlam experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Coquitlam. The month with the most rain in Coquitlam is November, with an average rainfall of 10.6 inches.

The month with the least rain in Coquitlam is July, with an average rainfall of 1.4 inches.

Average Monthly Rainfall in Coquitlam

Average Monthly Rainfall in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 inNov 1810.6 inNov 1810.6 inJul 301.2 inJul 301.2 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 7.9″6.7″6.3″4.2″2.9″2.4″1.4″1.5″3.0″7.2″10.6″8.6″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Coquitlam experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.8 months, from November 16 to March 10, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Coquitlam is January, with an average snowfall of 4.2 inches.

The snowless period of the year lasts for 8.2 months, from March 10 to November 16. The least snow falls around July 27, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Coquitlam

The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 4.2″2.5″0.6″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.9″3.5″

The length of the day in Coquitlam varies extremely over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 11 minutes of daylight; the longest day is June 20, with 16 hours, 15 minutes of daylight.

Hours of Daylight and Twilight in Coquitlam

Hours of Daylight and Twilight in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 1912 hr, 9 minMar 1916 hr, 15 minJun 2016 hr, 15 minJun 2012 hr, 13 minSep 2212 hr, 13 minSep 228 hr, 11 minDec 218 hr, 11 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 8.7h10.2h12.0h13.8h15.4h16.2h15.7h14.3h12.5h10.7h9.1h8.3h

The earliest sunrise is at 5:04 AM on June 15, and the latest sunrise is 3 hours, 2 minutes later at 8:06 AM on December 31. The earliest sunset is at 4:12 PM on December 11, and the latest sunset is 5 hours, 9 minutes later at 9:20 PM on June 24.

Daylight saving time (DST) is observed in Coquitlam during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

Sunrise & Sunset with Twilight and Daylight Saving Time in Coquitlam

Sunrise & Sunset with Twilight and Daylight Saving Time in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:04 AMJun 155:04 AM9:20 PMJun 249:20 PMJun 24Dec 114:12 PMDec 114:12 PM8:06 AMDec 318:06 AMDec 31Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunset
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Coquitlam

Solar Elevation and Azimuth in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000101010102020303040405060000101010202020303040405050601764NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Coquitlam

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Coquitlam, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 1% throughout.

Humidity Comfort Levels in Coquitlam

Humidity Comfort Levels in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 140%Jan 140%Aug 41%Aug 41%NowNowcomfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.2d0.0d0.0d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Coquitlam experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.5 months, from October 21 to April 6, with average wind speeds of more than 4.1 miles per hour. The windiest month of the year in Coquitlam is December, with an average hourly wind speed of 5.3 miles per hour.

The calmer time of year lasts for 6.5 months, from April 6 to October 21. The calmest month of the year in Coquitlam is August, with an average hourly wind speed of 2.8 miles per hour.

Average Wind Speed in Coquitlam

Average Wind Speed in CoquitlamwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mphDec 285.4 mphDec 285.4 mphAug 82.7 mphAug 82.7 mphOct 214.1 mphOct 214.1 mphApr 64.1 mphApr 64.1 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 5.25.04.53.93.53.32.92.83.23.94.95.3

The predominant average hourly wind direction in Coquitlam varies throughout the year.

The wind is most often from the south for 7.3 months, from March 14 to October 24, with a peak percentage of 56% on June 20. The wind is most often from the east for 4.7 months, from October 24 to March 14, with a peak percentage of 42% on January 1.

Wind Direction in Coquitlam

Wind Direction in CoquitlamESEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Coquitlam is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from June 15 to September 14, with an average temperature above 57°F. The month of the year in Coquitlam with the warmest water is August, with an average temperature of 60°F.

The time of year with cooler water lasts for 4.5 months, from November 21 to April 4, with an average temperature below 48°F. The month of the year in Coquitlam with the coolest water is January, with an average temperature of 45°F.

Average Water Temperature in Coquitlam

Average Water Temperature in CoquitlamwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°FJul 3160°FJul 3160°F45°FJan 3045°FJan 30Jun 1557°FJun 1557°FSep 1457°FSep 1457°FNov 2148°FNov 2148°FApr 448°FApr 448°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 45°F45°F46°F49°F53°F57°F59°F60°F57°F52°F48°F46°F

To characterize how pleasant the weather is in Coquitlam throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Coquitlam for general outdoor tourist activities is from mid July to mid August, with a peak score in the last week of July.

Tourism Score in Coquitlam

Tourism Score in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.56.50.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Coquitlam for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Beach/Pool Score in Coquitlam

Beach/Pool Score in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.22.20.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitation
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Coquitlam typically lasts for 7.0 months (214 days), from around April 8 to around November 7, rarely starting before March 17 or after May 2, and rarely ending before October 17 or after November 28.

Time Spent in Various Temperature Bands and the Growing Season in Coquitlam

Time Spent in Various Temperature Bands and the Growing Season in Coquitlamgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 850%Apr 850%Nov 750%Nov 790%May 290%May 290%Oct 1790%Oct 1710%Mar 1710%Mar 1710%Nov 2810%Nov 280%Jan 260%Jan 26Jul 24100%Jul 24100%very coldcoldcoolcomfortablewarmfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Coquitlam should appear around April 29, only rarely appearing before April 14 or after May 16.

Growing Degree Days in Coquitlam

Growing Degree Days in CoquitlamJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°FApr 2990°FApr 2990°FJul 22900°FJul 22900°FOct 121,800°FOct 121,800°FDec 311,854°FDec 311,854°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.3 months, from May 11 to August 19, with an average daily incident shortwave energy per square meter above 5.4 kWh. The brightest month of the year in Coquitlam is July, with an average of 6.4 kWh.

The darker period of the year lasts for 4.0 months, from October 20 to February 19, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest month of the year in Coquitlam is December, with an average of 0.8 kWh.

Average Daily Incident Shortwave Solar Energy in Coquitlam

Average Daily Incident Shortwave Solar Energy in CoquitlambrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 196.5 kWhJul 196.5 kWhDec 250.8 kWhDec 250.8 kWhMay 115.4 kWhMay 115.4 kWhOct 201.9 kWhOct 201.9 kWhFeb 191.9 kWhFeb 191.9 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 1.01.82.84.35.56.06.45.64.02.21.10.8

For the purposes of this report, the geographical coordinates of Coquitlam are 49.283 deg latitude, -122.753 deg longitude, and 92 ft elevation.

The topography within 2 miles of Coquitlam contains very significant variations in elevation, with a maximum elevation change of 1,319 feet and an average elevation above sea level of 169 feet. Within 10 miles contains very significant variations in elevation (5,102 feet). Within 50 miles also contains extreme variations in elevation (8,730 feet).

The area within 2 miles of Coquitlam is covered by artificial surfaces (50%), trees (31%), and cropland (12%), within 10 miles by trees (49%) and artificial surfaces (25%), and within 50 miles by trees (48%) and water (27%).

This report illustrates the typical weather in Coquitlam, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Coquitlam.

For each station, the records are corrected for the elevation difference between that station and Coquitlam according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Coquitlam is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Coquitlam and a given station.

The stations contributing to this reconstruction are:

Sources mapCWMM, 65%7 mi, -75 ftCVBB, 19%15 mi, -82 ftCWHC, 17%16 mi, -82 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Coquitlam and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.