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Weather & Climate in St.-Charles, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St.-Charles has a cool climate with an average annual temperature of 39°F (4°C). Winters average 8°F in January while summers reach 65°F in July. The area gets 268 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 37.2 inches. The area receives 14.0 inches of snow annually. The city sits at an elevation of 725 feet.
Temperature
8°F Jan (-13°C)
65°F Jul (19°C)
| Annual Average | 39.0°F |
| 28% below US avg | |
| January Average | 8°F (-13°C) |
| July Average | 65°F (19°C) |
| Sunny Days | 268 days/yr |
Geography
| Elevation | 725 ft (221 m) |
| Area | 121.4 sq mi (314.5 km²) |
| Population Density | 11/sq mi |
| Coordinates | 46.3630°N, 80.4172°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
11 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Jan 1, 2000 | 17 km NNE of Notre-Dame-du-Lac, Canada | M4.7 | 128 km | 18 km |
| Mar 9, 1998 | Ontario, Canada | M3.9 | 52 km | 1 km |
| Aug 5, 2014 | 6 km NNW of Lively, Canada | M3.8 | 61 km | 5 km |
| Mar 13, 2005 | 5 km N of Greater Sudbury, Canada | M3.6 | 47 km | 18 km |
| Oct 10, 1995 | southern Quebec, Canada | M3.5 | 127 km | 18 km |
| May 25, 1998 | 3 km NW of Lively, Canada | M3.4 | 59 km | 1 km |
| Aug 5, 2014 | 5 km NNW of Lively, Canada | M3.3 | 60 km | 12 km |
| May 2, 2015 | 12 km NE of Notre-Dame-du-Lac, Canada | M3.3 | 125 km | 18 km |
| Feb 8, 2019 | 7 km SW of Azilda, Canada | M3.1 | 60 km | 2 km |
| Apr 1, 2020 | 3 km NE of Saint-Isidore, Canada | M2.9 | 149 km | 10 km |
| Jul 29, 2012 | 17 km SSW of Parry Sound, Canada | M2.5 | 133 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 8°F (-13°C) | 3.2 in | Coldest |
| February | 12°F (-11°C) | 2.2 in | Driest |
| March | 22°F (-5°C) | 2.6 in | |
| April | 37°F (3°C) | 2.5 in | |
| May | 51°F (11°C) | 3.5 in | |
| June | 60°F (16°C) | 2.9 in | |
| July | 65°F (19°C) | 3.0 in | Warmest |
| August | 63°F (17°C) | 3.5 in | |
| September | 55°F (13°C) | 3.9 in | Wettest |
| October | 44°F (7°C) | 3.8 in | |
| November | 32°F (-0°C) | 3.4 in | |
| December | 17°F (-8°C) | 2.8 in |
St.-Charles has a seasonal temperature swing of 57°F / from 8°F in January to 65°F in July. Total annual precipitation is 37.3 inches, with September being the wettest month (3.9") and February the driest (2.2").