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Weather & Climate in Casselman, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Casselman has a cool climate with an average annual temperature of 42°F (6°C). Winters average 12°F in January while summers reach 69°F in July. The area gets 263 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 40.5 inches. The area receives 14.9 inches of snow annually. The city sits at an elevation of 223 feet.
Temperature
12°F Jan (-11°C)
69°F Jul (20°C)
| Annual Average | 42.3°F |
| 22% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 263 days/yr |
Geography
| Elevation | 223 ft (68 m) |
| Area | 2.0 sq mi (5.1 km²) |
| Population Density | 2,000/sq mi |
| Coordinates | 45.3168°N, 75.0826°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
183 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Jun 23, 2010 | 29 km NNE of Val-des-Monts, Canada | M5.4 | 70 km | 19 km |
| Apr 20, 2002 | 8 km NNW of Au Sable Forks, New York | M5.3 | 141 km | 5 km |
| May 17, 2013 | 20 km NNE of Shawville, Canada | M5.1 | 110 km | 13 km |
| Oct 19, 1990 | 11 km SW of Mont-Laurier, Canada | M4.6 | 134 km | 13 km |
| Mar 14, 1996 | 7 km WNW of Saint-Adolphe-d'Howard, Canada | M4.5 | 90 km | 18 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 57 km | 18 km |
| Dec 25, 1993 | 9 km WSW of Mont-Laurier, Canada | M4.3 | 138 km | 18 km |
| Oct 31, 1999 | 7 km SW of Morin-Heights, Canada | M4.2 | 84 km | 18 km |
| May 24, 1997 | 6 km W of Saint-Adolphe-d'Howard, Canada | M4.2 | 90 km | 10 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 29 km | 18 km |
| Nov 17, 1992 | 16 km ENE of Saint-André-Avellin, Canada | M4.0 | 53 km | 18 km |
| Aug 6, 2000 | 7 km SSW of La Minerve, Canada | M4.0 | 98 km | 18 km |
| Feb 25, 2006 | 4 km NE of Thurso, Canada | M4.0 | 36 km | 11 km |
| Oct 10, 2012 | 7 km ESE of Verchères, Canada | M3.9 | 150 km | 9 km |
| Oct 7, 1990 | 21 km WNW of La Minerve, Canada | M3.9 | 112 km | 18 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 76 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 54 km | 10 km |
| Sep 18, 2011 | 1 km E of Thurso, Canada | M3.8 | 34 km | 5 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 86 km | 18 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 93 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 15.0 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1908 | NOTRE DAME DE LA SALETTE | Meteorological | 15.0 m | 33 | 65 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 3.1 in | Coldest |
| February | 15°F (-10°C) | 2.4 in | Driest |
| March | 26°F (-3°C) | 2.6 in | |
| April | 41°F (5°C) | 3.2 in | |
| May | 55°F (13°C) | 3.5 in | |
| June | 64°F (18°C) | 3.9 in | Wettest |
| July | 69°F (20°C) | 3.9 in | Warmest |
| August | 67°F (19°C) | 3.6 in | |
| September | 58°F (15°C) | 3.8 in | |
| October | 46°F (8°C) | 3.6 in | |
| November | 35°F (2°C) | 3.7 in | |
| December | 20°F (-7°C) | 3.1 in |
Casselman has a seasonal temperature swing of 57°F / from 12°F in January to 69°F in July. Total annual precipitation is 40.5 inches, with June being the wettest month (3.9") and February the driest (2.4").