Granby (QC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Granby.
Climate overview of Granby
The climate in Granby, Quebec, Canada, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to -4°C (25°F) in January.
The city has a wet climate, receiving around 1263 mm (50 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. June is the wettest month. Sunshine peaks in July, when the city sees around 9.1 hours of sunshine per day.
Granby Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Granby - and find the best time to visit.
Monthly Temperature in Granby
In Granby, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -4°C (25°F) in January.
Nighttime temperatures range from 15°C (59°F) in July to -14°C (7°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Granby
Granby experiences significant rain/snowfall throughout the year, averaging 1263 mm (50 in) of precipitation annually. The wettest period in Granby occurs in June, which receives around 129 mm (5.1 in) of precipitation. During the driest month, February, Granby experiences moderate snowfall, totaling 79 mm (3.1 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Granby Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Granby
In Granby, summer days are longer and more sunny, with daily sunshine hours peaking at 9.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 2.7 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Granby by Month
The relative humidity is high throughout the year in Granby.
The city experiences its highest humidity in December, reaching 71%. In May, the humidity drops to its lowest level at 51%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Granby
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -14°C (7°F).
Frequently asked questions about the climate in Granby
What is the best time to visit Granby?
May, June, July, August and September typically offer the most optimal weather in Granby. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Granby has warm summers and very cold winters.
What temperatures can I expect in Granby?
Daytime highs range from -4°C (25°F) in January to 27°C (81°F) in July. Nighttime lows range from -14°C (7°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Granby get?
Annual rainfall is around 1263 mm (50 in). June is the wettest month with 129 mm (5.1 in), while February is the driest with 79 mm (3.1 in).
How sunny is Granby?
Granby receives around 2,042 hours of sunshine per year. July is the sunniest month with 272 hours, while December is the cloudiest with just 80 hours. Overall, Granby enjoys abundant sunshine.
Granby 3-Day Forecast
Granby on the map
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