Canada · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Calgary are July, August and September, when daytime temperatures are agreeable and rainfall is relatively low.
Calgary sees its warmest weather in July, when daytime highs average around 24°C, and its coolest in December (around -2°C).
Annual precipitation totals roughly 440mm — June is typically the wettest month (~93mm) and February the driest (~11mm).
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 60 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | -1° / -11°C | 11mm | 🤔 Fair |
| February | 2° / -10°C | 11mm | 🤔 Fair |
| March | 7° / -6°C | 19mm | 🤔 Fair |
| April | 12° / -1°C | 26mm | 👍 Good |
| May | 17° / 4°C | 67mm | 👍 Good |
| June | 21° / 8°C | 93mm | 🌟 Great |
| July | 24° / 11°C | 66mm | 🌟 Great |
| August | 23° / 10°C | 57mm | 🌟 Great |
| September | 19° / 6°C | 48mm | 🌟 Great |
| October | 12° / 0°C | 17mm | 👍 Good |
| November | 3° / -6°C | 14mm | 🤔 Fair |
| December | -2° / -11°C | 12mm | 🤔 Fair |
January in Calgary is freezing, with daytime highs below zero, with average daytime highs around -1°C (30°F) and nighttime lows near -11°C (12°F). Expect roughly 11mm of precipitation, and rain is rare.
🎒 What to pack — insulated winter coat · thermal layers · gloves and a warm hat
February in Calgary is cold, with average daytime highs around 2°C (36°F) and nighttime lows near -10°C (15°F). Expect roughly 11mm of precipitation, and rain is rare.
🎒 What to pack — warm coat · sweaters and layers · scarf
March in Calgary is cold, with average daytime highs around 7°C (44°F) and nighttime lows near -6°C (21°F). Expect roughly 19mm of precipitation, and rain is rare.
🎒 What to pack — warm coat · sweaters and layers · scarf
April in Calgary is chilly, with average daytime highs around 12°C (54°F) and nighttime lows near -1°C (30°F). Expect roughly 26mm of precipitation, with little rainfall.
🎒 What to pack — jacket or coat · long-sleeve layers
May in Calgary is mild, with average daytime highs around 17°C (63°F) and nighttime lows near 4°C (38°F). Expect roughly 67mm of precipitation, with a moderate amount of rain.
🎒 What to pack — light jacket · layers for cool evenings
June in Calgary is pleasantly warm, with average daytime highs around 21°C (69°F) and nighttime lows near 8°C (47°F). Expect roughly 93mm of precipitation, with a moderate amount of rain.
🎒 What to pack — light layers · comfortable walking shoes
July in Calgary is pleasantly warm, with average daytime highs around 24°C (75°F) and nighttime lows near 11°C (51°F). Expect roughly 66mm of precipitation, with a moderate amount of rain.
🎒 What to pack — light layers · comfortable walking shoes
August in Calgary is pleasantly warm, with average daytime highs around 23°C (74°F) and nighttime lows near 10°C (50°F). Expect roughly 57mm of precipitation, with little rainfall.
🎒 What to pack — light layers · comfortable walking shoes
September in Calgary is mild, with average daytime highs around 19°C (65°F) and nighttime lows near 6°C (42°F). Expect roughly 48mm of precipitation, with little rainfall.
🎒 What to pack — light jacket · layers for cool evenings
October in Calgary is chilly, with average daytime highs around 12°C (53°F) and nighttime lows near 0°C (32°F). Expect roughly 17mm of precipitation, and rain is rare.
🎒 What to pack — jacket or coat · long-sleeve layers
November in Calgary is cold, with average daytime highs around 3°C (37°F) and nighttime lows near -6°C (21°F). Expect roughly 14mm of precipitation, and rain is rare.
🎒 What to pack — warm coat · sweaters and layers · scarf
December in Calgary is freezing, with daytime highs below zero, with average daytime highs around -2°C (29°F) and nighttime lows near -11°C (13°F). Expect roughly 12mm of precipitation, and rain is rare.
🎒 What to pack — insulated winter coat · thermal layers · gloves and a warm hat