City in Alberta, Canada
Calgary weather by month and the best time to visit
When to go to Calgary
Jun–Sep is warm and dry; early July Stampede is very busy. Winters are sunny but cold with chinook warm spells; hail storms hit in summer.
Calgary weather by month
Average daily high, rainfall and conditions.
- Jan-1°17 mm
- Feb0°21 mm
- Mar5°26 mm
- Apr10°46 mm
- May17°73 mm
- Jun20°115 mm
- Jul25°58 mm
- Aug24°61 mm
- Sep18°53 mm
- Oct11°32 mm
- Nov3°23 mm
- Dec-2°21 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | -1°C30°F | -10°C14°F | 17 mm | 83% | Freezing |
| February | 0°C32°F | -10°C13°F | 21 mm | 79% | Freezing |
| March | 5°C40°F | -6°C20°F | 26 mm | 72% | Cold |
| April | 10°C50°F | -2°C29°F | 46 mm | 66% | Cold |
| May | 17°C62°F | 4°C39°F | 73 mm | 64% | Cool |
| June | 20°C69°F | 8°C47°F | 115 mm | 67% | Pleasant |
| July | 25°C77°F | 12°C53°F | 58 mm | 62% | Pleasant |
| August | 24°C75°F | 10°C50°F | 61 mm | 63% | Pleasant |
| September | 18°C65°F | 5°C42°F | 53 mm | 67% | Pleasant |
| October | 11°C51°F | -1°C31°F | 32 mm | 72% | Cold |
| November | 3°C37°F | -6°C22°F | 23 mm | 77% | Cold |
| December | -2°C28°F | -10°C13°F | 21 mm | 82% | Freezing |
Best months across Canada
| Place | Best months | Warmest month |
|---|---|---|
| Toronto | May–Sep | Jul (24°C) |
| Vancouver | Jun–Sep | Jul (24°C) |
| Montreal | May–Sep | Jul (25°C) |
| Banff | Jan–Feb, Jun–Sep | Jul (21°C) |
| Niagara Falls | May–Sep | Jul (26°C) |
| Quebec City | Feb, Jun–Sep | Jul (24°C) |
| Whistler | Jul–Aug, Dec–Mar | Jul (22°C) |
| Ottawa | May–Sep | Jul (26°C) |
| Calgary | Jun–Sep | Jul (25°C) |
| Victoria | May–Sep | Aug (21°C) |
| Jasper | Jun–Sep | Jul (22°C) |
| Halifax | Jun–Sep | Aug (21°C) |
| Tofino | Jun–Sep, Nov–Dec | Aug (18°C) |
| Edmonton | Jun–Sep | Jul (24°C) |
| Kelowna | Jun–Sep | Jul (30°C) |
| Yellowknife | Feb–Mar, Sep | Jul (21°C) |
| Mont-Tremblant | Jan–Mar, Sep–Oct | Jul (24°C) |
| Prince Edward Island | Jun–Sep | Aug (22°C) |
Quick answers
What is the best month to visit Calgary?
Jun–Sep. Jun–Sep is warm and dry; early July Stampede is very busy. Winters are sunny but cold with chinook warm spells; hail storms hit in summer.
When is the rainy season in Calgary?
Rain peaks in June with about 115 mm. No month averages 150 mm or more.
What is the hottest month in Calgary?
July, with average highs of 25°C (77°F).
How cold does Calgary get?
The coolest nights are in February, averaging -10°C (13°F).
More about Calgary
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Sources
- NASA POWER climatology (2001–2020)
- Calgary Transit
- Calgary Airport
- Tourism Calgary
- Alberta Health Services
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 1.6°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.