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Weather & Climate in Chatsworth, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Chatsworth has a cool climate with an average annual temperature of 43°F (6°C). Winters average 19°F in January while summers reach 66°F in July. The area gets 256 sunny days per year, above the national average. Annual precipitation totals 44.1 inches. The area receives 15.0 inches of snow annually. The city sits at an elevation of 965 feet.
Temperature
19°F Jan (-7°C)
66°F Jul (19°C)
| Annual Average | 43.1°F |
| 20% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 256 days/yr |
Geography
| Elevation | 965 ft (294 m) |
| Area | 229.5 sq mi (594.4 km²) |
| Population Density | 31/sq mi |
| Coordinates | 44.4561°N, 80.8979°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.5.
| Jul 29, 2012 | 17 km SSW of Parry Sound, Canada | M2.5 | 104 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 122 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1855 | OWEN SOUND, LAKE HURON | Unknown | 2.7 m | - | 61 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 4.4 in | Coldest |
| February | 19°F (-7°C) | 3.2 in | |
| March | 28°F (-2°C) | 2.8 in | Driest |
| April | 41°F (5°C) | 2.8 in | |
| May | 52°F (11°C) | 3.5 in | |
| June | 61°F (16°C) | 3.1 in | |
| July | 66°F (19°C) | 3.2 in | Warmest |
| August | 65°F (18°C) | 3.7 in | |
| September | 58°F (15°C) | 4.5 in | |
| October | 48°F (9°C) | 3.9 in | |
| November | 36°F (2°C) | 4.5 in | |
| December | 25°F (-4°C) | 4.6 in | Wettest |
Chatsworth has a seasonal temperature swing of 48°F / from 19°F in January to 66°F in July. Total annual precipitation is 44.1 inches, with December being the wettest month (4.6") and March the driest (2.8").