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. 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) |
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").