Granby Climate by Month
Granby, Quebec, Canada
Warm summers and freezing winters, with rain spread through the year.
Granby has warm summers and freezing winters, with rain spread through the year. July is the warmest month, with highs around 79°F (26°C); January is the coolest at 23°F (-5°C), and nights dip to 6°F (-14°C). About 48 in (1218 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 80% relative humidity.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- 6°F(-14°C)
- Average low, January
- Rain per year
- 48 in(1218 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: June
Best and worst months in Granby
Best for weatherThe most comfortable weather comes in June, August and September, with highs around 74°F (23°C) and about 4.3 in (110 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 23°F (-5°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Granby weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 23°F(-5°C) | 6°F(-14°C) | 3.5 in(90 mm) | 100% | 1.5 |
| FebFebruary | 26°F(-3°C) | 8°F(-14°C) | 2.8 in(71 mm) | 93% | 2.3 |
| MarMarch | 36°F(2°C) | 19°F(-7°C) | 3.2 in(81 mm) | 79% | 3.4 |
| AprApril | 51°F(10°C) | 33°F(0°C) | 3.9 in(100 mm) | 67% | 4.5 |
| MayMay | 65°F(18°C) | 45°F(7°C) | 4.1 in(105 mm) | 61% | 5.1 |
| JunJuneBest | 74°F(23°C) | 54°F(12°C) | 5.0 in(126 mm) | 74% | 5.6 |
| JulJuly | 79°F(26°C) | 59°F(15°C) | 4.6 in(117 mm) | 74% | 5.6 |
| AugAugustBest | 78°F(25°C) | 58°F(15°C) | 4.6 in(116 mm) | 73% | 5.0 |
| SepSeptemberBest | 70°F(21°C) | 50°F(10°C) | 3.5 in(88 mm) | 78% | 3.9 |
| OctOctober | 56°F(13°C) | 40°F(4°C) | 5.0 in(127 mm) | 80% | 2.3 |
| NovNovember | 43°F(6°C) | 29°F(-2°C) | 3.7 in(94 mm) | 83% | 1.4 |
| DecDecember | 31°F(-1°C) | 17°F(-8°C) | 4.1 in(103 mm) | 92% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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