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Weather & Climate in Saint-Blaise-sur-Richelieu, QC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Blaise-sur-Richelieu has a cool climate with an average annual temperature of 43°F (6°C). Winters average 14°F in January while summers reach 69°F in July. The area gets 265 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 39.3 inches. The area receives 10.1 inches of snow annually. The city sits at an elevation of 141 feet.
Temperature
14°F Jan (-10°C)
69°F Jul (21°C)
| Annual Average | 43.4°F |
| 20% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 265 days/yr |
Geography
| Elevation | 141 ft (43 m) |
| Area | 26.9 sq mi (69.5 km²) |
| Population Density | 78/sq mi |
| Coordinates | 45.2168°N, 73.2825°W |
| Timezone | America/Montreal |
Precipitation & Snow
Air Quality
Earthquake History
101 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 | 85 km | 5 km |
| Mar 14, 1996 | 7 km WNW of Saint-Adolphe-d'Howard, Canada | M4.5 | 124 km | 18 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 93 km | 18 km |
| Oct 31, 1999 | 7 km SW of Morin-Heights, Canada | M4.2 | 107 km | 18 km |
| May 24, 1997 | 6 km W of Saint-Adolphe-d'Howard, Canada | M4.2 | 123 km | 10 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 139 km | 18 km |
| Nov 17, 1992 | 16 km ENE of Saint-André-Avellin, Canada | M4.0 | 137 km | 18 km |
| Oct 10, 2012 | 7 km ESE of Verchères, Canada | M3.9 | 60 km | 9 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 66 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 108 km | 10 km |
| Jun 16, 1995 | 8 km N of Lisbon, New Hampshire | M3.8 | 150 km | 5 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 59 km | 18 km |
| Feb 11, 2002 | 2 km WNW of Notre-Dame-des-Prairies, Canada | M3.8 | 95 km | 10 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 48 km | 18 km |
| Sep 23, 1993 | 11 km SE of La Conception, Canada | M3.8 | 140 km | 18 km |
| Nov 16, 1993 | 5 km SSE of Saint-Édouard, Canada | M3.8 | 17 km | 17 km |
| Sep 1, 2024 | 5 km SE of Pierreville, Canada | M3.8 | 101 km | 1 km |
| Nov 6, 2012 | Ontario-Quebec border region, Canada | M3.7 | 112 km | 11 km |
| Jan 9, 2006 | 2 km ESE of Franklin, Canada | M3.7 | 52 km | 13 km |
| Apr 20, 2002 | 5 km NNW of Au Sable Forks, New York | M3.7 | 87 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 | 48 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 14°F (-10°C) | 2.5 in | Coldest |
| February | 17°F (-9°C) | 2.1 in | Driest |
| March | 28°F (-2°C) | 2.4 in | |
| April | 42°F (6°C) | 3.1 in | |
| May | 56°F (13°C) | 3.4 in | |
| June | 65°F (18°C) | 3.7 in | |
| July | 69°F (21°C) | 4.2 in | Warmest, Wettest |
| August | 67°F (20°C) | 3.9 in | |
| September | 59°F (15°C) | 3.7 in | |
| October | 47°F (8°C) | 3.6 in | |
| November | 36°F (2°C) | 3.5 in | |
| December | 22°F (-6°C) | 3.1 in |
Saint-Blaise-sur-Richelieu has a seasonal temperature swing of 55°F / from 14°F in January to 69°F in July. Total annual precipitation is 39.3 inches, with July being the wettest month (4.2") and February the driest (2.1").