Climate averages 1991–2020
Calgary weather
in April.
A cool, fairly dry month: the 7th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Calgary: daytime highs average 10.1°C and nights cool to about -2.2°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 38 mm of rain on roughly 8 days, which makes April a fairly dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 48 min on an average April day.
The nearest other city in this atlas is Airdrie (28 km away). In April its highs average 9.5°C, 0.7°C cooler than Calgary, with 39 mm of rain.
Among the 86 cities listed in Canada, Calgary ranks joint 53rd of 86 for the warmest April highs and joint 9th of 86 for the driest April (rainfall, lowest first). The mean April high of those 86 cities is 10.3°C; Calgary is 0.2°C cooler than that mean.
From April to May, average highs rise by 5.5°C to 15.7°C, and monthly rainfall rises from 38 mm to 72 mm.
The annual picture
April in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Calgary climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.9°C-13.1°C | -13.1°C | 12 | 3.7 | 8.58 h |
| February | 0.0°C-11.4°C | -11.4°C | 12 | 3.7 | 10.010 h |
| March | 4.2°C-7.6°C | -7.6°C | 21 | 5.5 | 11.812 h |
| April, selected | 10.1°C-2.2°C | -2.2°C | 38 | 8.0 | 13.814 h |
| May | 15.7°C3.0°C | 3.0°C | 72 | 11.3 | 15.516 h |
| June | 19.1°C7.8°C | 7.8°C | 104 | 13.7 | 16.516 h |
| July | 22.7°C10.8°C | 10.8°C | 61 | 10.8 | 16.116 h |
| August | 22.3°C10.1°C | 10.1°C | 63 | 9.5 | 14.615 h |
| September | 17.5°C5.6°C | 5.6°C | 44 | 7.9 | 12.713 h |
| October | 10.2°C-0.7°C | -0.7°C | 24 | 6.2 | 10.811 h |
| November | 2.1°C-7.1°C | -7.1°C | 19 | 4.9 | 9.09 h |
| December | -2.8°C-12.5°C | -12.5°C | 14 | 3.7 | 8.08 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Airdrie in AprilCanada · 28 kmHigh 9.5°C · Low -2.0°C · 39 mm rain
- Red Deer in AprilCanada · 137 kmHigh 9.4°C · Low -2.0°C · 33 mm rain
- Lethbridge in AprilCanada · 175 kmHigh 11.6°C · Low 0.2°C · 40 mm rain
- Sherwood Park in AprilCanada · 279 kmHigh 8.7°C · Low -2.2°C · 34 mm rain
- Edmonton in AprilCanada · 281 kmHigh 9.4°C · Low -1.7°C · 32 mm rain
- Kelowna in AprilCanada · 404 kmHigh 13.2°C · Low 3.9°C · 43 mm rain
- Spokane Valley in AprilUnited States · 439 kmHigh 13.7°C · Low 2.2°C · 58 mm rain
- Kamloops in AprilCanada · 440 kmHigh 13.6°C · Low 3.1°C · 30 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Calgary) is explained once on the Calgary year overview and on the Sources, method and limits page.