Winter Weather at Peace River Airport Alberta, CanadaDaily high temperatures increase by 6°F, from 19°F to 25°F, rarely falling below -11°F or exceeding 41°F. The lowest daily average high temperature is 14°F on December 30. Daily low temperatures are around 3°F, rarely falling below -26°F or exceeding 26°F. The lowest daily average low temperature is -1°F on January 12. For reference, on July 23, the hottest day of the year, temperatures at Peace River Airport typically range from 52°F to 74°F, while on January 11, the coldest day of the year, they range from -1°F to 14°F. The figure below shows you a compact characterization of the hourly average winter temperatures. 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. Yekaterinburg, Russia (4,628 miles away) is the far-away foreign place with temperatures most similar to Peace River Airport (view comparison). CloudsThe winter at Peace River Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 70% throughout the season. The highest chance of overcast or mostly cloudy conditions is 71% on February 20. The clearest day of the winter is December 7, with clear, mostly clear, or partly cloudy conditions 32% of the time. For reference, on February 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 71%, while on August 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 56%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Peace River Airport, the chance of a wet day over the course of the winter is gradually decreasing, starting the season at 13% and ending it at 10%. For reference, the year's highest daily chance of a wet day is 29% on June 24, and its lowest chance is 9% on March 2. Over the course of the winter at Peace River Airport, the chance of a day with only rain remains an essentially constant 1% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow decreases from 11% to 8%. RainfallTo show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during the winter at Peace River Airport is essentially constant, remaining about 0.0 inches throughout, and rarely exceeding 0.2 inches or falling below -0.0 inches. The lowest average 31-day accumulation is 0.0 inches on December 16. SnowfallAs with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day snowfall during the winter at Peace River Airport is decreasing, starting the season at 4.7 inches, when it rarely exceeds 10.4 inches or falls below 1.2 inches, and ending the season at 3.3 inches, when it rarely exceeds 7.4 inches or falls below 0.3 inches. The highest average 31-day accumulation is 5.0 inches on January 12. SunOver the course of the winter at Peace River Airport, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 3 hours, 20 minutes, implying an average daily increase of 2 minutes, 15 seconds, and weekly increase of 15 minutes, 46 seconds. The shortest day of the winter is December 21, with 6 hours, 54 minutes of daylight and the longest day is February 28, with 10 hours, 40 minutes of daylight. The latest sunrise of the winter at Peace River Airport is 9:22 AM on December 28 and the earliest sunrise is 1 hour, 40 minutes earlier at 7:42 AM on February 28. The earliest sunset is 4:13 PM on December 13 and the latest sunset is 2 hours, 9 minutes later at 6:22 PM on February 28. Daylight saving time is observed at Peace River Airport during 2024, but it neither starts nor ends during the winter, so the entire season is in standard time. For reference, on June 20, the longest day of the year, the Sun rises at 5:01 AM and sets 17 hours, 41 minutes later, at 10:42 PM, while on December 21, the shortest day of the year, it rises at 9:21 AM and sets 6 hours, 54 minutes later, at 4:15 PM. 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. MoonThe figure below presents a compact representation of key lunar data for the winter of 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. HumidityWe 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 Peace River Airport is essentially constant during the winter, remaining around 0% throughout. For reference, on July 26, 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. WindThis 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 Peace River Airport is essentially constant during the winter, remaining within 0.2 miles per hour of 7.3 miles per hour throughout. For reference, on April 12, the windiest day of the year, the daily average wind speed is 7.6 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 5.8 miles per hour. The hourly average wind direction at Peace River Airport throughout the winter is predominantly from the west, with a peak proportion of 43% on December 23. Growing SeasonDefinitions 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 Peace River Airport typically lasts for 4.0 months (122 days), from around May 16 to around September 14, rarely starting before April 29 or after June 3, and rarely ending before August 26 or after October 3. The winter at Peace River Airport is reliably fully outside of 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 Peace River Airport are very rapidly decreasing during the winter, decreasing by 1,311°F, from 1,311°F to 0°F, over the course of the season. Solar EnergyThis 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 Peace River Airport is rapidly increasing during the winter, rising by 1.5 kWh, from 0.6 kWh to 2.1 kWh, over the course of the season. The lowest average daily incident shortwave solar energy during the winter is 0.5 kWh on December 19. TopographyFor the purposes of this report, the geographical coordinates of Peace River Airport are 56.227 deg latitude, -117.449 deg longitude, and 1,864 ft elevation. The topography within 2 miles of Peace River Airport contains only modest variations in elevation, with a maximum elevation change of 230 feet and an average elevation above sea level of 1,866 feet. Within 10 miles contains only modest variations in elevation (1,175 feet). Within 50 miles contains very significant variations in elevation (2,096 feet). The area within 2 miles of Peace River Airport is covered by cropland (54%) and sparse vegetation (45%), within 10 miles by cropland (41%) and trees (29%), and within 50 miles by trees (52%) and cropland (32%). Data SourcesThis report illustrates the typical weather at Peace River Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointPeace River Airport 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 Manning AGDM; Fairview AGDM; Peoria AGDM; High Prairie Airport; High Prairie AGDM; Grande Prairie Airport; Spirit River Auto Station, Alta; and Red Earth. Other DataAll 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. DisclaimerThe 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. |