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Jasper, Alberta climate
Dfb Warm-summer humid continental
Jasper has a seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 24°C, while the coldest is December averaging around −14°C at night. Around 363 mm of precipitation falls each year, peaking in June (55 mm) and easing off in February (14 mm). At latitude 53°N, day length swings from 7.3 hours in midwinter to 16.6 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Jasper climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −3 | 1 | 4 | 11 | 17 | 20 | 24 | 23 | 18 | 10 | 2 | −4 |
| Avg temp (°C) | −9 | −6 | −2 | 3 | 9 | 12 | 15 | 15 | 10 | 4 | −3 | −9 |
| Avg low (°C) | −15 | −13 | −9 | −4 | 1 | 5 | 7 | 6 | 2 | −2 | −8 | −14 |
| Precipitation (mm) | 22 | 14 | 21 | 18 | 32 | 55 | 54 | 45 | 33 | 27 | 27 | 17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −3 | 1 | 4 | 11 | 17 | 20 |
| Avg temp (°C) | −9 | −6 | −2 | 3 | 9 | 12 |
| Avg low (°C) | −15 | −13 | −9 | −4 | 1 | 5 |
| Precipitation (mm) | 22 | 14 | 21 | 18 | 32 | 55 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 23 | 18 | 10 | 2 | −4 |
| Avg temp (°C) | 15 | 15 | 10 | 4 | −3 | −9 |
| Avg low (°C) | 7 | 6 | 2 | −2 | −8 | −14 |
| Precipitation (mm) | 54 | 45 | 33 | 27 | 27 | 17 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 74 | 73 | 73 | 78 | 67 | 64 | 67 | 75 | 76 | 70 |
| Relative humidity (%) | 94 | 93 | 90 | 83 | 73 | 73 | 73 | 74 | 77 | 82 | 91 | 94 |
| Wind speed (mph) | 1.1 | 1.1 | 1.1 | 0.9 | 0.8 | 0.5 | 0.4 | 0.5 | 0.4 | 0.4 | 0.7 | 1.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 74 | 73 | 73 | 78 |
| Relative humidity (%) | 94 | 93 | 90 | 83 | 73 | 73 |
| Wind speed (mph) | 1.1 | 1.1 | 1.1 | 0.9 | 0.8 | 0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 64 | 67 | 75 | 76 | 70 |
| Relative humidity (%) | 73 | 74 | 77 | 82 | 91 | 94 |
| Wind speed (mph) | 0.4 | 0.5 | 0.4 | 0.4 | 0.7 | 1.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Jasper Warden, a weather station, about 7 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.