Calgary Weather
Calgary weather today, the 14-day forecast, and average temperature, rain and what to wear for every month — compared against Hong Kong. Best months to visit: May, Jun, Jul, Aug and Sep.
Calgary current weather
Calgary now (local time 05:15)
2°C
Clear
- Feels like
- -1°
- Humidity
- 83%
- Wind
- 5 km/h
Next 7 days · what to wear
0° – 22°C
Rain likely on 1 of 7 days
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Calgary 14-day forecast
Today
10/4
☁️
18°
2°
💧0%
Mon
10/5
☁️
22°
8°
💧0%
Tue
10/6
☁️
19°
8°
💧0%
Wed
10/7
☁️
15°
7°
💧1%
Thu
10/8
☁️
16°
6°
💧4%
Fri
10/9
☁️
16°
8°
💧37%
Sat
10/10
🌨️
8°
0°
💧52%
Sun
10/11
☁️
4°
-2°
💧41%
Mon
10/12
☁️
12°
-2°
💧16%
Tue
10/13
🌦️
6°
3°
💧8%
Wed
10/14
🌦️
12°
0°
💧10%
Thu
10/15
☁️
13°
2°
💧14%
Fri
10/16
🌤️
15°
4°
💧13%
Sat
10/17
🌦️
7°
3°
💧6%
Best time to visit Calgary
On temperature and rainfall, the most comfortable months in Calgary are May, Jun, Jul, Aug and Sep. The hottest month is July (average high 25°C) and the coldest is December (average low -10°C).
Calgary climate by month
| Month | Avg high | Avg low | Rain | Humidity | vs Hong Kong |
|---|---|---|---|---|---|
| Jan | -1°C | -10°C | 17 mm | 83% | -22°C |
| Feb | 0°C | -10°C | 21 mm | 79% | -23°C |
| Mar | 5°C | -6°C | 26 mm | 72% | -21°C |
| Apr | 10°C | -2°C | 46 mm | 66% | -19°C |
| MayBest | 17°C | 4°C | 73 mm | 64% | -16°C |
| JunBest | 21°C | 8°C | 115 mm | 67% | -14°C |
| JulBest | 25°C | 12°C | 58 mm | 62% | -11°C |
| AugBest | 24°C | 10°C | 61 mm | 63% | -12°C |
| SepBest | 18°C | 5°C | 53 mm | 67% | -16°C |
| Oct | 11°C | -1°C | 32 mm | 72% | -21°C |
| Nov | 3°C | -6°C | 23 mm | 77% | -24°C |
| Dec | -2°C | -10°C | 21 mm | 82% | -25°C |
Data: NASA POWER 2001–2020 climatology (MERRA-2, elevation-corrected); Hong Kong comparison uses HKO 1991–2020 normals.
Calgary weather month by month: what to wear
Calgary in OctoberThis month
October in Calgary is chilly: average highs of 11°C and lows of -1°C, around 32 mm of rain (mostly dry) and 72% humidity — about 21°C colder than Hong Kong.
👕 A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
Calgary in November
November in Calgary is freezing: average highs of 3°C and lows of -6°C, around 23 mm of rain (dry) and 77% humidity — about 24°C colder than Hong Kong.
👕 A down jacket, thermal base layers, scarf and gloves; snow is possible.
Calgary in December
December in Calgary is freezing: average highs of -2°C and lows of -10°C, around 21 mm of rain (dry) and 82% humidity — about 25°C colder than Hong Kong.
👕 A heavy down jacket, thermals, gloves, a hat and non-slip shoes; snow is possible.
Calgary in January
January in Calgary is freezing: average highs of -1°C and lows of -10°C, around 17 mm of rain (dry) and 83% humidity — about 22°C colder than Hong Kong.
👕 A heavy down jacket, thermals, gloves, a hat and non-slip shoes; snow is possible.
Calgary in February
February in Calgary is freezing: average highs of 0°C and lows of -10°C, around 21 mm of rain (dry) and 79% humidity — about 23°C colder than Hong Kong.
👕 A heavy down jacket, thermals, gloves, a hat and non-slip shoes; big day–night swing, so dress in layers; snow is possible.
Calgary in March
March in Calgary is cold: average highs of 5°C and lows of -6°C, around 26 mm of rain (dry) and 72% humidity — about 21°C colder than Hong Kong.
👕 A down jacket, thermal base layers, scarf and gloves; big day–night swing, so dress in layers.
Calgary in April
April in Calgary is chilly: average highs of 10°C and lows of -2°C, around 46 mm of rain (mostly dry) and 66% humidity — about 19°C colder than Hong Kong.
👕 A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
Calgary in MayBest month
May in Calgary is mild and cool: average highs of 17°C and lows of 4°C, around 73 mm of rain (mostly dry) and 64% humidity — about 16°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Calgary in JuneBest month
June in Calgary is mild and cool: average highs of 21°C and lows of 8°C, around 115 mm of rain (some rain) and 67% humidity — about 14°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Calgary in JulyBest month
July in Calgary is pleasantly warm: average highs of 25°C and lows of 12°C, around 58 mm of rain (mostly dry) and 62% humidity — about 11°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Calgary in AugustBest month
August in Calgary is pleasantly warm: average highs of 24°C and lows of 10°C, around 61 mm of rain (mostly dry) and 63% humidity — about 12°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Calgary in SeptemberBest month
September in Calgary is mild and cool: average highs of 18°C and lows of 5°C, around 53 mm of rain (mostly dry) and 67% humidity — about 16°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
FAQ
›What is the best time to visit Calgary?
On temperature and rainfall, the most comfortable months in Calgary are May, Jun, Jul, Aug and Sep. The hottest month is July (average high 25°C) and the coldest is December (average low -10°C).
›What's the weather like in Calgary in October, and what should I wear?
October in Calgary is chilly: average highs of 11°C and lows of -1°C, around 32 mm of rain (mostly dry) and 72% humidity — about 21°C colder than Hong Kong. What to wear: A sweater plus a coat or windbreaker; big day–night swing, so dress in layers.
›What's the weather like in Calgary in November, and what should I wear?
November in Calgary is freezing: average highs of 3°C and lows of -6°C, around 23 mm of rain (dry) and 77% humidity — about 24°C colder than Hong Kong. What to wear: A down jacket, thermal base layers, scarf and gloves; snow is possible.
›When is the rainy season in Calgary?
Calgary is wettest in June, with about 115 mm on average, and driest in January, with about 17 mm.
›How cold does Calgary get? Does it snow?
The coldest month is December, averaging -2°C by day and -10°C at night. Nights regularly drop below freezing and snow is possible.
Planning a trip to Calgary?
More Canada weather
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Forecast data: Open-Meteo.com (CC BY 4.0), refreshed every 3 hours. Hottest month: July; coldest: December.