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Weather & Climate in Granby, QC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Granby has a cool climate with an average annual temperature of 45°F (7°C). Winters average 17°F in January while summers reach 69°F in July. The area gets 253 sunny days per year, above the national average. Annual precipitation totals 58.7 inches (wetter than the 38-inch national average). The area receives 71.9 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 341 feet.
Temperature
17°F Jan (-9°C)
69°F Jul (21°C)
| Annual Average | 45.4°F |
| 16% below US avg | |
| January Average | 17°F (-9°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 341 ft (104 m) |
| Area | 59.0 sq mi (152.7 km²) |
| Population Density | 1,171/sq mi |
| Coordinates | 45.4001°N, 72.7324°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
75 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Apr 20, 2002 | 8 km NNW of Au Sable Forks, New York | M5.3 | 125 km | 5 km |
| Mar 14, 1996 | 7 km WNW of Saint-Adolphe-d'Howard, Canada | M4.5 | 147 km | 18 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 131 km | 18 km |
| Oct 31, 1999 | 7 km SW of Morin-Heights, Canada | M4.2 | 133 km | 18 km |
| May 24, 1997 | 6 km W of Saint-Adolphe-d'Howard, Canada | M4.2 | 146 km | 10 km |
| Oct 10, 2012 | 7 km ESE of Verchères, Canada | M3.9 | 58 km | 9 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 110 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 143 km | 10 km |
| Sep 1, 2024 | 5 km SE of Pierreville, Canada | M3.8 | 72 km | 1 km |
| Nov 16, 1993 | 5 km SSE of Saint-Édouard, Canada | M3.8 | 64 km | 17 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 93 km | 18 km |
| Jun 16, 1995 | 8 km N of Lisbon, New Hampshire | M3.8 | 140 km | 5 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 105 km | 18 km |
| Feb 11, 2002 | 2 km WNW of Notre-Dame-des-Prairies, Canada | M3.8 | 93 km | 10 km |
| Nov 6, 2012 | Ontario-Quebec border region, Canada | M3.7 | 148 km | 11 km |
| Jan 9, 2006 | 2 km ESE of Franklin, Canada | M3.7 | 99 km | 13 km |
| Sep 12, 1995 | 8 km S of Brownsburg-Chatham, Canada | M3.7 | 134 km | 18 km |
| Apr 20, 2002 | 5 km NNW of Au Sable Forks, New York | M3.7 | 126 km | 5 km |
| Jul 23, 2010 | 18 km S of Saint-Antoine-de-Tilly, Canada | M3.5 | 150 km | 18 km |
| Apr 3, 1997 | 9 km ENE of Saint-Cyrille-de-Wendover, Canada | M3.5 | 72 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: FLAT ROCK FIRE (658 acres, 2018).
| Year | Name | Acres Burned | Distance |
| 2018 | FLAT ROCK FIRE | 658 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-9°C) | 3.4 in | |
| February | 15°F (-9°C) | 2.7 in | Coldest, Driest |
| March | 27°F (-3°C) | 3.0 in | |
| April | 41°F (5°C) | 3.5 in | |
| May | 54°F (12°C) | 3.7 in | |
| June | 63°F (17°C) | 4.3 in | |
| July | 69°F (21°C) | 4.6 in | Warmest, Wettest |
| August | 66°F (19°C) | 4.6 in | |
| September | 58°F (14°C) | 3.9 in | |
| October | 46°F (8°C) | 4.1 in | |
| November | 35°F (2°C) | 4.1 in | |
| December | 21°F (-6°C) | 3.9 in |
Granby has a seasonal temperature swing of 54°F / from 15°F in February to 69°F in July. Total annual precipitation is 45.6 inches, with July being the wettest month (4.6") and February the driest (2.7").