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Average Weather in Merritt Canada

In Merritt, the summers are comfortable and partly cloudy, the winters are freezing and mostly cloudy, and it is dry year round. Over the course of the year, the temperature typically varies from 19°F to 79°F and is rarely below 1°F or above 89°F.

Climate Summary

67%67%27%27%overcastprecipitation: 2.2 inprecipitation: 2.2 in0.7 in0.7 inmuggy: 0%muggy: 0%drydryvery coldcoldcoolcomfortablewarmcoldtourism score: 5.7tourism score: 5.70.00.0JanFebMarAprMayJunJulAugSepOctNovDec
Click on each chart for more information.

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

Temperature

The warm season lasts for 3.0 months, from June 10 to September 12, with an average daily high temperature above 69°F. The hottest day of the year is August 3, with an average high of 79°F and low of 53°F.

The cold season lasts for 3.2 months, from November 15 to February 20, with an average daily high temperature below 38°F. The coldest day of the year is January 1, with an average low of 19°F and high of 27°F.

Average High and Low Temperature

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.

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

Average Hourly Temperature in MerrittJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoldcoolfreezingvery coldcomfortablewarm
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Clouds

In Merritt, 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 Merritt begins around June 12 and lasts for 3.5 months, ending around September 28. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.

The cloudier part of the year begins around September 28 and lasts for 8.5 months, ending around June 12. On January 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.

Cloud Cover Categories

Cloud Cover Categories in MerrittclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 367%Aug 367%Jan 1527%Jan 1527%Jun 1247%Jun 1247%Sep 2847%Sep 2847%clearovercastmostly clearpartly cloudymostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 8.5 months, from October 3 to June 20, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 34% on November 10.

The drier season lasts 3.5 months, from June 20 to October 3. The smallest chance of a wet day is 10% on August 10.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Merritt changes throughout the year.

Rain alone is the most common for 10 months, from February 3 to December 5. The highest chance of a day with rain alone is 28% on October 29.

Snow alone is the most common for 2.0 months, from December 5 to February 3. The highest chance of a day with snow alone is 16% on January 3.

Daily Chance of Precipitation

Daily Chance of Precipitation in MerrittsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 1034%Nov 1034%Aug 1010%Aug 1010%Feb 322%Feb 322%Jan 126%Jan 126%Oct 322%Oct 322%Jun 2022%Jun 2022%snowrainmixed
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).

Rainfall

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. Merritt experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Merritt. The most rain falls during the 31 days centered around November 8, with an average total accumulation of 1.9 inches.

The least rain falls around January 1, with an average total accumulation of 0.6 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

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

The snowy period of the year lasts for 5.0 months, from October 24 to March 24, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 1, with an average total liquid-equivalent accumulation of 1.0 inches.

The snowless period of the year lasts for 7.0 months, from March 24 to October 24. The least snow falls around July 21, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in MerrittsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 inJan 11.0 inJan 11.0 inJul 210.0 inJul 210.0 inOct 240.1 inOct 240.1 inMar 240.1 inMar 240.1 in
The average liquid-equivalent 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.

Sun

The length of the day in Merritt varies extremely over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 3 minutes of daylight; the longest day is June 20, with 16 hours, 24 minutes of daylight.

Hours of Daylight and Twilight

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.

The earliest sunrise is at 4:52 AM on June 16, and the latest sunrise is 3 hours, 9 minutes later at 8:02 AM on December 31. The earliest sunset is at 4:00 PM on December 11, and the latest sunset is 5 hours, 16 minutes later at 9:17 PM on June 24.

Daylight saving time (DST) is observed in Merritt during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in MerrittJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 164:52 AMJun 164:52 AM9:17 PMJun 249:17 PMJun 24Dec 114:00 PMDec 114:00 PM8:02 AMDec 318:02 AMDec 31Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunset
The solar day over the course of the year 2017. 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.

Humidity

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 Merritt, 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, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in MerrittJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 30%Jul 30%drydrycomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Merritt does not vary significantly over the course of the year, remaining within 0.3 miles per hour of 4.0 miles per hour throughout.

Average Wind Speed

Average Wind Speed in MerrittJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mphMar 244.3 mphMar 244.3 mphAug 53.6 mphAug 53.6 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the west for 4.8 months, from April 27 to September 22, with a peak percentage of 59% on July 18. The wind is most often from the south for 7.2 months, from September 22 to April 27, with a peak percentage of 47% on January 1.

Wind Direction

Wind Direction in MerrittSWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%southwestnortheast
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is in Merritt 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 Merritt for general outdoor tourist activities is from mid July to mid August, with a peak score in the first week of August.

Tourism Score

Tourism Score in MerrittJanFebMarAprMayJunJulAugSepOctNovDec02468105.75.70.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Merritt for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in MerrittJanFebMarAprMayJunJulAugSepOctNovDec02468101.81.80.00.0 precipitationprecipitationcloudscloudstemperaturetemperature
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.

Growing Season

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 Merritt typically lasts for 5.3 months (159 days), from around April 30 to around October 7, rarely starting before April 12 or after May 18, and rarely ending before September 20 or after October 24.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Merrittgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 3050%Apr 3050%Oct 750%Oct 750%May 1890%May 1890%Sep 2090%Sep 2090%Apr 1210%Apr 1210%Oct 2410%Oct 2410%0%Feb 130%Feb 13Jul 17100%Jul 17100%frigidvery coldcoldcoolfreezingcomfortablewarm
The percentage of time spent in various temperature bands: 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 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 Merritt should appear around May 9, only rarely appearing before April 28 or after May 23.

Growing Degree Days

Growing Degree Days in MerrittJanFebMarAprMayJunJulAugSepOctNovDec0°F200°F400°F600°F800°F1,000°F1,200°F1,400°F1,600°F1,800°FMay 990°FMay 990°FAug 2900°FAug 2900°FDec 311,505°FDec 311,505°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.4 months, from May 8 to August 20, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 16, with an average of 7.0 kWh.

The darker period of the year lasts for 3.8 months, from October 23 to February 16, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 26, with an average of 0.9 kWh.

Average Daily Incident Shortwave Solar Energy

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Merritt are 50.112 deg latitude, -120.794 deg longitude, and 2,346 ft elevation.

The topography within 2 miles of Merritt contains very significant variations in elevation, with a maximum elevation change of 1,814 feet and an average elevation above sea level of 2,293 feet. Within 10 miles contains very significant variations in elevation (4,075 feet). Within 50 miles also contains extreme variations in elevation (9,537 feet).

The area within 2 miles of Merritt is covered by sparse vegetation (49%) and shrubs (23%), within 10 miles by trees (50%) and sparse vegetation (26%), and within 50 miles by trees (65%) and sparse vegetation (19%).

Data Sources

This report illustrates the typical weather in Merritt, 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 6 weather stations near enough to contribute to our estimation of the temperature and dew point in Merritt.

For each station, the records are corrected for the elevation difference between that station and Merritt 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 Merritt is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Merritt and a given station.

The stations contributing to this reconstruction are: Lytton, B. C. (22%, 58 kilometers, west); Kamloops Auto (20%, 70 kilometers, north); Princeton Aerodrome (22%, 75 kilometers, south); Hope (11%, 97 kilometers, southwest); Hope Aerodrome (11%, 97 kilometers, southwest); and Kelowna International Airport (13%, 103 kilometers, east).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.