Calgary Weather by Month
Twelve months of Calgary, Canada weather — averages from 2006–2025.
Calgary's warmest month is July (average high 23.3°C (73.9°F)) and the coolest is December (-3.2°C (26.2°F)). The most rain falls in June (about 103 mm), and January is the driest (about 13 mm). July is the sunniest, with about 13.5 hours of sunshine a day.
Best months to visit Calgary
Ranked within Calgary's own year by temperature comfort, rainy days and sunshine — historical averages, not a forecast.
Calgary month by month
January
FairHigh -1.6°C (29.1°F)
Low -11.6°C (11.1°F)
- Rainfall
- 13 mm (0.5 in)
- Rainy days
- 4 rainy days
- Sunshine
- 6 h sunshine / day
February
FairHigh -1.5°C (29.3°F)
Low -12.6°C (9.3°F)
- Rainfall
- 17 mm (0.7 in)
- Rainy days
- 5 rainy days
- Sunshine
- 7.6 h sunshine / day
March
PoorHigh 4.2°C (39.6°F)
Low -7.5°C (18.5°F)
- Rainfall
- 22 mm (0.9 in)
- Rainy days
- 6 rainy days
- Sunshine
- 9 h sunshine / day
April
FairHigh 9.9°C (49.8°F)
Low -2.3°C (27.9°F)
- Rainfall
- 39 mm (1.6 in)
- Rainy days
- 9 rainy days
- Sunshine
- 10.5 h sunshine / day
May
GoodHigh 16.3°C (61.3°F)
Low 3.6°C (38.5°F)
- Rainfall
- 65 mm (2.6 in)
- Rainy days
- 10 rainy days
- Sunshine
- 11.6 h sunshine / day
June
GoodHigh 19.8°C (67.6°F)
Low 8.2°C (46.8°F)
- Rainfall
- 103 mm (4 in)
- Rainy days
- 13 rainy days
- Sunshine
- 12.6 h sunshine / day
July
GoodHigh 23.3°C (73.9°F)
Low 11.4°C (52.5°F)
- Rainfall
- 61 mm (2.4 in)
- Rainy days
- 11 rainy days
- Sunshine
- 13.5 h sunshine / day
August
GreatHigh 22.7°C (72.9°F)
Low 10.5°C (50.9°F)
- Rainfall
- 56 mm (2.2 in)
- Rainy days
- 9 rainy days
- Sunshine
- 11.9 h sunshine / day
September
GreatHigh 18.4°C (65.1°F)
Low 6.4°C (43.5°F)
- Rainfall
- 37 mm (1.5 in)
- Rainy days
- 7 rainy days
- Sunshine
- 9.9 h sunshine / day
October
FairHigh 10.7°C (51.3°F)
Low 0°C (32°F)
- Rainfall
- 26 mm (1 in)
- Rainy days
- 6 rainy days
- Sunshine
- 8 h sunshine / day
November
PoorHigh 2.3°C (36.1°F)
Low -7.1°C (19.2°F)
- Rainfall
- 23 mm (0.9 in)
- Rainy days
- 6 rainy days
- Sunshine
- 6.1 h sunshine / day
December
FairHigh -3.2°C (26.2°F)
Low -12.8°C (9°F)
- Rainfall
- 19 mm (0.7 in)
- Rainy days
- 5 rainy days
- Sunshine
- 5.3 h sunshine / day
More Canada cities by month
Based on 20 years of historical weather data (2006–2025) from Open-Meteo. Monthly averages, not a forecast.