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January Weather at Princeton Aerodrome Canada

Daily high temperatures increase by 5°F, from 27°F to 32°F, rarely falling below 14°F or exceeding 40°F.

Daily low temperatures increase by 3°F, from 14°F to 17°F, rarely falling below -3°F or exceeding 29°F.

For reference, on August 2, the hottest day of the year, temperatures at Princeton Aerodrome typically range from 50°F to 82°F, while on December 28, the coldest day of the year, they range from 14°F to 27°F.

Average High and Low Temperature in January at Princeton Aerodrome

Average High and Low Temperature in January at Princeton AerodromeJan1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131-5°F-5°F0°F0°F5°F5°F10°F10°F15°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°FDecFebJan 127°FJan 127°F14°F14°FJan 3132°FJan 3132°F17°F17°FJan 1128°FJan 1128°F15°F15°FJan 2131°FJan 2131°F16°F16°F
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 hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, 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 January at Princeton Aerodrome

Average Hourly Temperature in January at Princeton AerodromeJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFebfreezingvery cold
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.

Hriňová, Slovakia (5,263 miles away); Koprivshtitsa, Bulgaria (5,733 miles); and Evren, Turkey (6,123 miles) are the far-away foreign places with temperatures most similar to Princeton Aerodrome (view comparison).

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The month of January at Princeton Aerodrome experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 67% throughout the month. The highest chance of overcast or mostly cloudy conditions is 68% on January 22.

The clearest day of the month is January 3, with clear, mostly clear, or partly cloudy conditions 34% of the time.

For reference, on January 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on August 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.

Cloud Cover Categories in January at Princeton Aerodrome

Cloud Cover Categories in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebAug 268%Aug 268%Jan 134%Jan 134%Jan 3133%Jan 3133%Jan 1133%Jan 1133%Jan 2132%Jan 2132%clearmostly clearpartly cloudymostly cloudyovercast
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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Princeton Aerodrome, the chance of a wet day over the course of January is gradually decreasing, starting the month at 29% and ending it at 27%.

For reference, the year's highest daily chance of a wet day is 39% on November 17, and its lowest chance is 10% on August 11.

Over the course of January at Princeton Aerodrome, the chance of a day with only rain increases from 2% to 6%, the chance of a day with mixed snow and rain remains an essentially constant 10% throughout, and the chance of a day with only snow decreases from 19% to 12%.

Probability of Precipitation in January at Princeton Aerodrome

Probability of Precipitation in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%DecFebJan 129%Jan 129%Jan 3127%Jan 3127%Jan 1131%Jan 1131%Jan 2129%Jan 2129%snowmixedrain
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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January at Princeton Aerodrome is essentially constant, remaining about 0.7 inches throughout, and rarely exceeding 1.9 inches.

Average Monthly Rainfall in January at Princeton Aerodrome

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.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during January at Princeton Aerodrome is rapidly decreasing, starting the month at 11.7 inches, when it rarely exceeds 21.9 inches or falls below 4.1 inches, and ending the month at 8.2 inches, when it rarely exceeds 17.3 inches or falls below 1.6 inches.

The highest average 31-day accumulation is 11.8 inches on January 3.

Average Monthly Snowfall in January at Princeton Aerodrome

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.

Over the course of January at Princeton Aerodrome, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 5 minutes, implying an average daily increase of 2 minutes, 10 seconds, and weekly increase of 15 minutes, 13 seconds.

The shortest day of the month is January 1, with 8 hours, 15 minutes of daylight and the longest day is January 31, with 9 hours, 20 minutes of daylight.

Hours of Daylight and Twilight in January at Princeton Aerodrome

Hours of Daylight and Twilight in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrDecFebnightnightdaydayJan 18 hr, 15 minJan 18 hr, 15 minJan 319 hr, 20 minJan 319 hr, 20 minJan 168 hr, 40 minJan 168 hr, 40 min
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 latest sunrise of the month at Princeton Aerodrome is 7:58 AM on January 1 and the earliest sunrise is 23 minutes earlier at 7:35 AM on January 31.

The earliest sunset is 4:13 PM on January 1 and the latest sunset is 43 minutes later at 4:55 PM on January 31.

Daylight saving time is observed at Princeton Aerodrome during 2024, but it neither starts nor ends during January, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:55 AM and sets 16 hours, 17 minutes later, at 9:12 PM, while on December 21, the shortest day of the year, it rises at 7:55 AM and sets 8 hours, 9 minutes later, at 4:05 PM.

Sunrise & Sunset with Twilight in January at Princeton Aerodrome

The solar day over the course of January. 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 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 January at Princeton Aerodrome

Solar Elevation and Azimuth in January at Princeton AerodromeJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFeb0010102000010102030
northeastsouthwest
Solar elevation and azimuth over the course of January 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 January 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in January at Princeton Aerodrome

Moon Rise, Set & Phases in January at Princeton AerodromeJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 123:33 PMDec 123:33 PMDec 264:34 PMDec 264:34 PMJan 113:58 AMJan 113:58 AMJan 259:55 AMJan 259:55 AMFeb 93:00 PMFeb 93:00 PMFeb 244:31 AMFeb 244:31 AM8:01 AM8:01 AM3:25 PM3:25 PM3:26 PM3:26 PM9:11 AM9:11 AM8:46 AM8:46 AM4:30 PM4:30 PM3:23 PM3:23 PM8:20 AM8:20 AM7:47 AM7:47 AM4:56 PM4:56 PM4:46 PM4:46 PM7:22 AM7:22 AM
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.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
74%-11:09 AMWNW10:19 PME4:14 AMS251,594 mi
2
65%-11:21 AMW11:26 PME4:53 AMS251,299 mi
3
50%-11:33 AMW-5:32 AMS250,180 mi
4
46%12:34 AME11:45 AMWSW-6:11 AMS248,242 mi
5
36%1:44 AMESE12:00 PMWSW-6:53 AMS245,558 mi
6
26%2:58 AMESE12:17 PMWSW-7:38 AMS242,275 mi
7
17%4:15 AMSE12:41 PMSW-8:28 AMS238,615 mi
8
10%5:34 AMSE1:14 PMSW-9:24 AMS234,863 mi
9
4%6:50 AMSE2:02 PMSW-10:26 AMS231,349 mi
10
1%7:56 AMSE3:08 PMSW-11:32 AMS228,407 mi
11
0%8:46 AMSE4:30 PMSW-12:38 PMS226,314 mi
12
3%9:22 AMSE5:59 PMWSW-1:40 PMS225,241 mi
13
8%9:48 AMESE7:30 PMWSW-2:38 PMS225,218 mi
14
16%10:08 AMESE8:57 PMWSW-3:31 PMS226,147 mi
15
26%10:24 AME10:21 PMW-4:20 PMS227,839 mi
16
38%10:40 AME11:44 PMW-5:08 PMS230,065 mi
17
50%10:55 AMENE--5:55 PMS232,597 mi
18
61%-1:05 AMWNW11:12 AMENE6:42 PMS235,240 mi
19
71%-2:26 AMWNW11:32 AMENE7:32 PMS237,856 mi
20
80%-3:46 AMNW11:58 AMNE8:24 PMS240,354 mi
21
88%-5:03 AMNW12:32 PMNE9:18 PMS242,690 mi
22
94%-6:11 AMNW1:18 PMNE10:13 PMS244,843 mi
23
98%-7:07 AMNW2:16 PMNE11:07 PMS246,800 mi
24
100%-7:49 AMNW3:23 PMNE11:58 PMS248,538 mi
25
100%-8:20 AMNW4:35 PMNE--
26
100%-8:43 AMWNW5:47 PMENE12:45 AMS250,017 mi
27
98%-9:01 AMWNW6:58 PMENE1:30 AMS251,170 mi
28
94%-9:15 AMWNW8:06 PMENE2:11 AMS251,909 mi
29
88%-9:27 AMW9:13 PME2:50 AMS252,136 mi
30
81%-9:39 AMW10:21 PME3:29 AMS251,751 mi
31
73%-9:51 AMW11:29 PMESE4:07 AMS250,673 mi

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 chance that a given day will be muggy at Princeton Aerodrome is essentially constant during January, remaining around 0% throughout.

For reference, on June 13, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in January at Princeton Aerodrome

Humidity Comfort Levels in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 10%Jan 10%Jan 310%Jan 310%Jan 110%Jan 110%Jan 210%Jan 210%drydry
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.

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 at Princeton Aerodrome is essentially constant during January, remaining within 0.1 miles per hour of 4.4 miles per hour throughout.

For reference, on January 17, the windiest day of the year, the daily average wind speed is 4.4 miles per hour, while on August 13, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.

The highest daily average wind speed during January is 4.4 miles per hour on January 17.

Average Wind Speed in January at Princeton Aerodrome

Average Wind Speed in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mphDecFebJan 174.4 mphJan 174.4 mphJan 14.4 mphJan 14.4 mphJan 314.3 mphJan 314.3 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction at Princeton Aerodrome throughout January is predominantly from the south, with a peak proportion of 43% on January 13.

Wind Direction in January at Princeton Aerodrome

Wind Direction in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebwestsoutheastnorth
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).

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 at Princeton Aerodrome typically lasts for 4.0 months (124 days), from around May 15 to around September 16, rarely starting before April 30 or after May 31, and rarely ending before August 29 or after October 2.

The month of January at Princeton Aerodrome is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in January at Princeton Aerodrome

Time Spent in Various Temperature Bands and the Growing Season in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb0%Jan 160%Jan 16frigidfreezingvery coldcold
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.

The average accumulated growing degree days at Princeton Aerodrome are essentially constant during January, remaining around 0°F throughout.

Growing Degree Days in January at Princeton Aerodrome

Growing Degree Days in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0°F0.0°F0.1°F0.1°F0.2°F0.2°F0.3°F0.3°F0.4°F0.4°F0.5°F0.5°F0.6°F0.6°F0.7°F0.7°F0.8°F0.8°F0.9°F0.9°F1.0°F1.0°FDecFebJan 10°FJan 10°FJan 310°FJan 310°FJan 110°FJan 110°FJan 210°FJan 210°F
The average growing degree days accumulated over the course of January, 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 at Princeton Aerodrome is gradually increasing during January, rising by 0.6 kWh, from 1.0 kWh to 1.6 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January at Princeton Aerodrome

Average Daily Incident Shortwave Solar Energy in January at Princeton AerodromeJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWhDecFebJan 11.0 kWhJan 11.0 kWhJan 311.6 kWhJan 311.6 kWhJan 111.1 kWhJan 111.1 kWhJan 211.3 kWhJan 211.3 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

This report illustrates the typical weather at Princeton Aerodrome, 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

Princeton Aerodrome has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Princeton Automatic Weather Reporting System, Summerland Automatic Weather Reporting System, Penticton Regional Airport, Hope Aerodrome, Osoyoos Automatic Weather Reporting System, Kamloops Auto, Kelowna International Airport, and Kamloops Airport.

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.

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