Weather & Climate in French River / Rivière des Français, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
French River / Rivière des Français has a cool climate with an average annual temperature of 40°F (5°C). Winters average 11°F in January while summers reach 66°F in July. Annual precipitation totals 37.5 inches. The area receives 14.7 inches of snow annually. The city sits at an elevation of 741 feet.
Temperature
11°F Jan (-12°C)
66°F Jul (19°C)
| Annual Average | 40.2°F |
| 26% below US avg | |
| January Average | 11°F (-12°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 741 ft (226 m) |
| Area | 277.2 sq mi (717.9 km²) |
| Population Density | 10/sq mi |
| Coordinates | 46.1489°N, 80.5003°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 | 146 km | 18 km |
| Mar 9, 1998 | Ontario, Canada | M3.9 | 58 km | 1 km |
| Aug 5, 2014 | 6 km NNW of Lively, Canada | M3.8 | 65 km | 5 km |
| Mar 13, 2005 | 5 km N of Greater Sudbury, Canada | M3.6 | 57 km | 18 km |
| Oct 10, 1995 | southern Quebec, Canada | M3.5 | 136 km | 18 km |
| May 25, 1998 | 3 km NW of Lively, Canada | M3.4 | 62 km | 1 km |
| Aug 5, 2014 | 5 km NNW of Lively, Canada | M3.3 | 64 km | 12 km |
| May 2, 2015 | 12 km NE of Notre-Dame-du-Lac, Canada | M3.3 | 142 km | 18 km |
| Feb 8, 2019 | 7 km SW of Azilda, Canada | M3.1 | 65 km | 2 km |
| Jul 29, 2012 | 17 km SSW of Parry Sound, Canada | M2.5 | 111 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 146 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 | - | 134 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 11°F (-12°C) | 3.1 in | Coldest |
| February | 13°F (-10°C) | 2.3 in | Driest |
| March | 24°F (-5°C) | 2.4 in | |
| April | 38°F (3°C) | 2.5 in | |
| May | 51°F (11°C) | 3.5 in | |
| June | 61°F (16°C) | 2.9 in | |
| July | 66°F (19°C) | 2.9 in | Warmest |
| August | 65°F (18°C) | 3.2 in | |
| September | 56°F (14°C) | 3.9 in | Wettest |
| October | 45°F (7°C) | 3.8 in | |
| November | 33°F (1°C) | 3.6 in | |
| December | 19°F (-7°C) | 3.3 in |
French River / Rivière des Français has a seasonal temperature swing of 55°F / from 11°F in January to 66°F in July. Total annual precipitation is 37.5 inches, with September being the wettest month (3.9") and February the driest (2.3").