Average Weather in Grande Prairie Canada
In Grande Prairie, the summers are long, comfortable, and partly cloudy and the winters are frigid, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 0°F to 75°F and is rarely below -25°F or above 85°F.
Based on the tourism score, the best time of year to visit Grande Prairie for warm-weather activities is from early July to mid August.
The warm season lasts for 4.0 months, from May 16 to September 16, with an average daily high temperature above 63°F. The hottest day of the year is August 4, with an average high of 75°F and low of 51°F.
The cold season lasts for 3.6 months, from November 17 to March 4, with an average daily high temperature below 29°F. The coldest day of the year is January 10, with an average low of 0°F and high of 17°F.
Average High and Low Temperature
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 Grande Prairie, 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 Grande Prairie begins around June 1 and lasts for 4.1 months, ending around October 6. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 57% of the time, and overcast or mostly cloudy 43% of the time.
The cloudier part of the year begins around October 6 and lasts for 7.9 months, ending around June 1. On February 26, the cloudiest day of the year, the sky is overcast or mostly cloudy 70% of the time, and clear, mostly clear, or partly cloudy 30% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Grande Prairie varies throughout the year.
The wetter season lasts 3.9 months, from May 19 to September 17, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 32% on June 23.
The drier season lasts 8.1 months, from September 17 to May 19. The smallest chance of a wet day is 11% on March 26.
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 Grande Prairie changes throughout the year.
Rain alone is the most common for 7.2 months, from March 28 to November 3. The highest chance of a day with rain alone is 32% on June 23.
Snow alone is the most common for 4.8 months, from November 3 to March 28. The highest chance of a day with snow alone is 15% on January 15.
Daily Chance of Precipitation
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. Grande Prairie experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 6.6 months, from April 10 to October 31, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 30, with an average total accumulation of 2.9 inches.
The rainless period of the year lasts for 5.4 months, from October 31 to April 10. The least rain falls around February 16, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
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. Grande Prairie experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 6.8 months, from October 3 to April 28, 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 9, with an average total liquid-equivalent accumulation of 0.7 inches.
The snowless period of the year lasts for 5.2 months, from April 28 to October 3. The least snow falls around July 24, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Grande Prairie varies extremely over the course of the year. In 2018, the shortest day is December 21, with 7 hours, 8 minutes of daylight; the longest day is June 21, with 17 hours, 25 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:14 AM on June 17, and the latest sunrise is 4 hours, 7 minutes later at 9:21 AM on December 29. The earliest sunset is at 4:25 PM on December 12, and the latest sunset is 6 hours, 14 minutes later at 10:39 PM on June 24.
Daylight saving time (DST) is observed in Grande Prairie during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Grande Prairie, 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
The average hourly wind speed in Grande Prairie experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 8.0 months, from September 22 to May 20, with average wind speeds of more than 6.5 miles per hour. The windiest day of the year is April 13, with an average hourly wind speed of 7.2 miles per hour.
The calmer time of year lasts for 4.0 months, from May 20 to September 22. The calmest day of the year is August 17, with an average hourly wind speed of 5.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Grande Prairie is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Grande Prairie 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 Grande Prairie for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.
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 Grande Prairie for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.
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.
The growing season in Grande Prairie typically lasts for 4.1 months (128 days), from around May 13 to around September 18, rarely starting before April 26 or after May 31, and rarely ending before August 27 or after October 6.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Grande Prairie should appear around May 15, only rarely appearing before May 3 or after May 27.
Growing Degree Days
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 3.6 months, from April 29 to August 17, with an average daily incident shortwave energy per square meter above 5.2 kWh. The brightest day of the year is June 29, with an average of 6.3 kWh.
The darker period of the year lasts for 3.8 months, from October 23 to February 17, with an average daily incident shortwave energy per square meter below 1.7 kWh. The darkest day of the year is December 19, with an average of 0.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Grande Prairie are 55.167 deg latitude, -118.803 deg longitude, and 2,162 ft elevation.
The topography within 2 miles of Grande Prairie contains only modest variations in elevation, with a maximum elevation change of 174 feet and an average elevation above sea level of 2,164 feet. Within 10 miles contains only modest variations in elevation (879 feet). Within 50 miles contains very significant variations in elevation (3,353 feet).
The area within 2 miles of Grande Prairie is covered by sparse vegetation (52%), artificial surfaces (28%), and cropland (20%), within 10 miles by cropland (42%) and sparse vegetation (27%), and within 50 miles by trees (61%) and cropland (27%).
This report illustrates the typical weather in Grande Prairie, 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 Grande Prairie.
For each station, the records are corrected for the elevation difference between that station and Grande Prairie 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 Grande Prairie is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Grande Prairie and a given station.
The stations contributing to this reconstruction are: Grande Prairie Airport (96%, 5.4 kilometers, west); Peoria AGDM (2.7%, 60 kilometers, northeast); and High Prairie Airport (1.2%, 104 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .