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Granby, Quebec climate
Dfb Warm-summer humid continental
Granby has a strongly seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 78°F, while the coldest is January averaging around 8°F at night. Precipitation is fairly even year-round, totalling about 48 inches. Snowfall is heavy (103 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 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)Granby climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 24 | 26 | 36 | 51 | 66 | 74 | 78 | 76 | 69 | 55 | 42 | 30 |
| Avg temp (°F) | 16 | 18 | 29 | 42 | 56 | 65 | 69 | 67 | 60 | 48 | 36 | 23 |
| Avg low (°F) | 8 | 11 | 21 | 34 | 46 | 55 | 60 | 59 | 51 | 40 | 29 | 17 |
| Precipitation (in) | 3.7 | 3.0 | 3.3 | 3.8 | 4.0 | 4.5 | 4.6 | 4.5 | 4.5 | 4.5 | 3.6 | 3.9 |
| Snowfall (in) | 23.0 | 22.8 | 18.7 | 6.4 | 0.3 | — | — | — | — | 1.4 | 8.5 | 22.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 24 | 26 | 36 | 51 | 66 | 74 |
| Avg temp (°F) | 16 | 18 | 29 | 42 | 56 | 65 |
| Avg low (°F) | 8 | 11 | 21 | 34 | 46 | 55 |
| Precipitation (in) | 3.7 | 3.0 | 3.3 | 3.8 | 4.0 | 4.5 |
| Snowfall (in) | 23.0 | 22.8 | 18.7 | 6.4 | 0.3 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 78 | 76 | 69 | 55 | 42 | 30 |
| Avg temp (°F) | 69 | 67 | 60 | 48 | 36 | 23 |
| Avg low (°F) | 60 | 59 | 51 | 40 | 29 | 17 |
| Precipitation (in) | 4.6 | 4.5 | 4.5 | 4.5 | 3.6 | 3.9 |
| Snowfall (in) | — | — | — | 1.4 | 8.5 | 22.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 66 | 65 | 67 | 68 | 64 | 61 | 59 | 59 | 69 | 72 | 73 |
| Relative humidity (%) | 95 | 94 | 90 | 82 | 80 | 81 | 82 | 82 | 81 | 84 | 88 | 93 |
| Wind speed (mph) | 3.4 | 4.1 | 3.1 | 1.7 | 0.8 | 0.7 | 0.6 | 0.6 | 0.7 | 0.7 | 1.1 | 2.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 66 | 65 | 67 | 68 | 64 |
| Relative humidity (%) | 95 | 94 | 90 | 82 | 80 | 81 |
| Wind speed (mph) | 3.4 | 4.1 | 3.1 | 1.7 | 0.8 | 0.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 59 | 59 | 69 | 72 | 73 |
| Relative humidity (%) | 82 | 82 | 81 | 84 | 88 | 93 |
| Wind speed (mph) | 0.6 | 0.6 | 0.7 | 0.7 | 1.1 | 2.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Granby, a weather station, about 2 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.