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Monthly climate in Calgary, Alberta, Canada

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Calgary features a subarctic climate (Dfc). Temperatures typically range between -10 °C (14 °F) and 17 °C (63 °F) through the year, but rarely can drop to -36 °C (-32 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 484 mm (19.1 inches) and receives 91 rainy days on the 1 mm (0.04 inches) threshold annually. Calgary enjoys an average of 3048 hours of sunshine throughout the year, and daylight varies from 7 hours 58 minutes to 16 hours 27 minutes per day.

Monthly average temperatures in Calgary, Alberta, Canada §

The warmest months in Calgary are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -10 to -7 °C (14 - 20 °F) throughout the day. On average each year, Calgary experiences 34 days above 25 °C (77.0 °F) and 179 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Calgary, Alberta, Canada. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 11°C
(52°F)		 13°C
(56°F)		 18°C
(64°F)		 26°C
(80°F)		 29°C
(85°F)		 37°C
(99°F)		 36°C
(98°F)		 38°C
(100°F)		 33°C
(92°F)		 24°C
(75°F)		 21°C
(70°F)		 14°C
(58°F)
Mean maximum 8°C
(47°F)		 9°C
(49°F)		 14°C
(58°F)		 21°C
(70°F)		 26°C
(80°F)		 27°C
(81°F)		 33°C
(91°F)		 34°C
(94°F)		 29°C
(84°F)		 22°C
(72°F)		 15°C
(59°F)		 10°C
(51°F)
Average high -2°C
(29°F)		 -5°C
(23°F)		 4°C
(39°F)		 9°C
(49°F)		 17°C
(62°F)		 21°C
(70°F)		 24°C
(76°F)		 24°C
(76°F)		 18°C
(64°F)		 10°C
(50°F)		 3°C
(38°F)		 -2°C
(29°F)
Daily mean -7°C
(20°F)		 -10°C
(14°F)		 -3°C
(27°F)		 3°C
(37°F)		 10°C
(51°F)		 15°C
(59°F)		 17°C
(63°F)		 16°C
(62°F)		 11°C
(52°F)		 4°C
(39°F)		 -2°C
(29°F)		 -7°C
(20°F)
Average low -11°C
(12°F)		 -16°C
(4°F)		 -8°C
(18°F)		 -3°C
(27°F)		 3°C
(39°F)		 8°C
(47°F)		 10°C
(49°F)		 9°C
(49°F)		 5°C
(41°F)		 -2°C
(29°F)		 -6°C
(21°F)		 -11°C
(13°F)
Mean minimum -32°C
(-24°F)		 -30°C
(-23°F)		 -23°C
(-10°F)		 -11°C
(13°F)		 -2°C
(28°F)		 3°C
(37°F)		 6°C
(42°F)		 3°C
(38°F)		 -2°C
(29°F)		 -12°C
(10°F)		 -17°C
(2°F)		 -25°C
(-13°F)
Minimum -36°C
(-32°F)		 -35°C
(-31°F)		 -31°C
(-23°F)		 -17°C
(1°F)		 -6°C
(22°F)		 1°C
(35°F)		 5°C
(41°F)		 3°C
(37°F)		 -3°C
(27°F)		 -22°C
(-8°F)		 -23°C
(-9°F)		 -35°C
(-31°F)

Compare climate in Calgary with other places

Compare temperature, precipitation, sunshine, UV index in Calgary, Alberta, Canada with other places around the world.

Monthly average precipitation in Calgary, Alberta, Canada §

Calgary usually has the most precipitation in May, June and July, with an average of 11 rainy days and 72 mm (2.8 inches) of precipitation per month. The driest months in Calgary are January, November and December. On average, 20 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Calgary, Alberta, Canada. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 8 (0.3) 29 (1.2) 27 (1.1) 38 (1.5) 62 (2.4) 85 (3.3) 69 (2.7) 43 (1.7) 43 (1.7) 31 (1.2) 26 (1.0) 24 (0.9)
Average precipitation days (≥ 1 mm) 2 8 6 9 10 12 11 7 9 5 7 5

Monthly sunshine hours in Calgary, Alberta, Canada §

The sunniest months in Calgary are June, July and August, when the sun shines an average of 11 hours 31 minutes a day. Least sunny months in Calgary: January, November and December receive an average of 5 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Calgary, Alberta, Canada. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 140 180 255 286 318 346 382 331 255 223 165 163
Mean daily daylight hours 8h 28m 10h 1m 11h 56m 13h 53m 15h 35m 16h 27m 15h 58m 14h 26m 12h 33m 10h 37m 8h 53m 7h 58m

Solar UV radiation in Calgary, Alberta, Canada §

Calgary experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Calgary UV Index data.

Average daily maximum UV levels by month for Calgary, Alberta, Canada. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 4 6 8 8 9 8 7 4 2 1

Detailed Monthly Weather Insights for Calgary, Alberta, Canada

Discover in-depth weather details for every month in Calgary. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Calgary's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.