Average Weather in April in Calgary Canada
Daily high temperatures increase by 11°F, from 47°F to 58°F, rarely falling below 31°F or exceeding 72°F.
Daily low temperatures increase by 9°F, from 27°F to 36°F, rarely falling below 16°F or exceeding 45°F.
For reference, on August 4, the hottest day of the year, temperatures in Calgary typically range from 52°F to 75°F, while on January 1, the coldest day of the year, they range from 12°F to 29°F.
Average High and Low Temperature in April
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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 April
The month of April in Calgary experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 62% to 58%.
The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 42% of the time.
For reference, on March 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 64%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.
Cloud Cover Categories in April
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Calgary, the chance of a wet day over the course of April is very rapidly increasing, starting the month at 10% and ending it at 18%.
For reference, the year's highest daily chance of a wet day is 34% on June 16, and its lowest chance is 3% on February 4.
Over the course of April in Calgary, the chance of a day with only rain increases from 4% to 15%, the chance of a day with mixed snow and rain remains an essentially constant 3% throughout, and the chance of a day with only snow decreases from 4% to 1%.
Probability of Precipitation in April
The average sliding 31-day rainfall during April in Calgary is increasing, starting the month at 0.3 inches, when it rarely exceeds 0.9 inches, and ending the month at 1.2 inches, when it rarely exceeds 2.5 inches or falls below 0.3 inches.
Average Monthly Rainfall in April
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. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during April in Calgary is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.6 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in April
Over the course of April in Calgary, 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, 48 minutes, implying an average daily increase of 3 minutes, 43 seconds, and weekly increase of 26 minutes, 1 second.
The shortest day of the month is April 1, with 13 hours, 0 minutes of daylight and the longest day is April 30, with 14 hours, 48 minutes of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Calgary is 7:10 AM on April 1 and the earliest sunrise is 1 hour, 0 minutes earlier at 6:10 AM on April 30.
The earliest sunset is 8:10 PM on April 1 and the latest sunset is 47 minutes later at 8:57 PM on April 30.
Daylight saving time is observed in Calgary during 2020, but it neither starts nor ends during April, so the entire month is in daylight saving time.
For reference, on June 20, the longest day of the year, the Sun rises at 5:21 AM and sets 16 hours, 33 minutes later, at 9:54 PM, while on December 21, the shortest day of the year, it rises at 8:37 AM and sets 7 hours, 54 minutes later, at 4:31 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Calgary is essentially constant during April, remaining around 0% throughout.
For reference, on July 3, 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 April
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Calgary is essentially constant during April, remaining within 0.2 miles per hour of 7.9 miles per hour throughout.
For reference, on December 24, the windiest day of the year, the daily average wind speed is 8.7 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.
Average Wind Speed in April
The hourly average wind direction in Calgary throughout April is predominantly from the west, with a peak proportion of 46% on April 1.
Wind Direction in April
The growing season in Calgary typically lasts for 4.4 months (135 days), from around May 11 to around September 22, rarely starting before April 21 or after May 29, and rarely ending before September 4 or after October 12.
The month of April in Calgary is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly increasing from 0% to 24% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in April
The average accumulated growing degree days in Calgary are gradually increasing during April, increasing by 54°F, from 15°F to 69°F, over the course of the month.
Growing Degree Days in April
The average daily incident shortwave solar energy in Calgary is increasing during April, rising by 1.3 kWh, from 4.4 kWh to 5.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in April
For the purposes of this report, the geographical coordinates of Calgary are 51.050 deg latitude, -114.085 deg longitude, and 3,527 ft elevation.
The topography within 2 miles of Calgary contains only modest variations in elevation, with a maximum elevation change of 299 feet and an average elevation above sea level of 3,507 feet. Within 10 miles contains only modest variations in elevation (951 feet). Within 50 miles contains very significant variations in elevation (7,936 feet).
The area within 2 miles of Calgary is covered by artificial surfaces (99%), within 10 miles by cropland (42%) and artificial surfaces (41%), and within 50 miles by cropland (62%) and trees (19%).
This report illustrates the typical weather in Calgary year round, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Calgary.
For each station, the records are corrected for the elevation difference between that station and Calgary 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 Calgary is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Calgary and a given station.
The stations contributing to this reconstruction are: Calgary International, Alta. (73%, 8 kilometers, northeast); Cop Upper (23%, 9 kilometers, west); Sparwood/Elk Valley Airport (2.3%, 80 kilometers, south); and Champion AGDM (1.8%, 101 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .