Calgary (AB) Weather & Climate: Best Time to Visit

In Calgary, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 24°C (75°F) in July to a very cold -2°C (28°F) in January.

Nighttime temperatures range from 9°C (48°F) in July to -12°C (10°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

On average, Calgary receives a reasonable amount of rain/snowfall, with an annual precipitation of 555 mm (22 in). The seasons in Calgary bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 115 mm (4.5 in) of precipitation. This rainfall is distributed across 12 rainy days.

In contrast, the driest month, January, experiences much less snowfall, totaling 17 mm (0.7 in) over 8 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Calgary Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Calgary, summer days are longer and more sunny, with daily sunshine hours peaking at 10.5 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.7 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is moderate throughout the year in Calgary.

The city experiences its highest humidity in January, reaching 54%. In April, the humidity drops to its lowest level at 41%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year