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Weather & Climate in Saint-Denis-sur-Richelieu, QC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Denis-sur-Richelieu has a cool climate with an average annual temperature of 42°F (6°C). Winters average 12°F in January while summers reach 68°F in July. The area gets 261 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 41.1 inches. The area receives 15.0 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 59 feet.
Temperature
12°F Jan (-11°C)
68°F Jul (20°C)
| Annual Average | 42.0°F |
| 22% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 261 days/yr |
Geography
| Elevation | 59 ft (18 m) |
| Area | 32.7 sq mi (84.6 km²) |
| Population Density | 72/sq mi |
| Coordinates | 45.7834°N, 73.1492°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
107 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 | 148 km | 5 km |
| Mar 14, 1996 | 7 km WNW of Saint-Adolphe-d'Howard, Canada | M4.5 | 102 km | 18 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 102 km | 18 km |
| May 24, 1997 | 6 km W of Saint-Adolphe-d'Howard, Canada | M4.2 | 101 km | 10 km |
| Oct 31, 1999 | 7 km SW of Morin-Heights, Canada | M4.2 | 91 km | 18 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 145 km | 18 km |
| Aug 6, 2000 | 7 km SSW of La Minerve, Canada | M4.0 | 148 km | 18 km |
| Nov 17, 1992 | 16 km ENE of Saint-André-Avellin, Canada | M4.0 | 133 km | 18 km |
| Oct 10, 2012 | 7 km ESE of Verchères, Canada | M3.9 | 10 km | 9 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 95 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 109 km | 10 km |
| Nov 16, 1993 | 5 km SSE of Saint-Édouard, Canada | M3.8 | 72 km | 17 km |
| Jul 30, 1998 | 0 km ENE of Lac-Simon, Canada | M3.8 | 129 km | 10 km |
| Sep 1, 2024 | 5 km SE of Pierreville, Canada | M3.8 | 42 km | 1 km |
| Sep 23, 1993 | 11 km SE of La Conception, Canada | M3.8 | 117 km | 18 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 85 km | 18 km |
| Feb 11, 2002 | 2 km WNW of Notre-Dame-des-Prairies, Canada | M3.8 | 39 km | 10 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 100 km | 18 km |
| Nov 6, 2012 | Ontario-Quebec border region, Canada | M3.7 | 114 km | 11 km |
| Jan 9, 2006 | 2 km ESE of Franklin, Canada | M3.7 | 102 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 2.9 in | Coldest |
| February | 14°F (-10°C) | 2.4 in | Driest |
| March | 25°F (-4°C) | 2.5 in | |
| April | 40°F (5°C) | 3.2 in | |
| May | 54°F (12°C) | 3.6 in | |
| June | 64°F (18°C) | 4.0 in | |
| July | 68°F (20°C) | 3.8 in | Warmest |
| August | 67°F (19°C) | 4.2 in | Wettest |
| September | 58°F (15°C) | 3.5 in | |
| October | 47°F (8°C) | 3.8 in | |
| November | 35°F (2°C) | 3.8 in | |
| December | 20°F (-7°C) | 3.4 in |
Saint-Denis-sur-Richelieu has a seasonal temperature swing of 57°F / from 12°F in January to 68°F in July. Total annual precipitation is 41.1 inches, with August being the wettest month (4.2") and February the driest (2.4").