Weather & Climate in Brethour, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Brethour has a cool climate with an average annual temperature of 36°F (2°C). Winters average 3°F in January while summers reach 64°F in July / a wide seasonal temperature swing of 61°F. Annual precipitation totals 33.0 inches. The area receives 12.8 inches of snow annually. The city sits at an elevation of 745 feet.
Temperature
3°F Jan (-16°C)
64°F Jul (18°C)
| Annual Average | 36.1°F |
| 33% below US avg | |
| January Average | 3°F (-16°C) |
| July Average | 64°F (18°C) |
Geography
| Elevation | 745 ft (227 m) |
| Area | 31.7 sq mi (82.0 km²) |
| Population Density | 3/sq mi |
| Coordinates | 47.7190°N, 79.5746°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
4 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 | 104 km | 18 km |
| May 2, 2015 | 12 km NE of Notre-Dame-du-Lac, Canada | M3.3 | 111 km | 18 km |
| Apr 1, 2020 | 3 km NE of Saint-Isidore, Canada | M2.9 | 37 km | 10 km |
| Jul 25, 2020 | 33 km NW of Malartic, Canada | M2.9 | 108 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 3°F (-16°C) | 2.1 in | Coldest |
| February | 7°F (-14°C) | 1.6 in | Driest |
| March | 19°F (-7°C) | 2.1 in | |
| April | 35°F (2°C) | 2.2 in | |
| May | 50°F (10°C) | 3.0 in | |
| June | 59°F (15°C) | 3.3 in | |
| July | 64°F (18°C) | 3.4 in | Warmest |
| August | 62°F (17°C) | 3.7 in | Wettest |
| September | 53°F (12°C) | 3.7 in | |
| October | 42°F (6°C) | 3.2 in | |
| November | 28°F (-2°C) | 2.5 in | |
| December | 12°F (-11°C) | 2.3 in |
Brethour has a seasonal temperature swing of 61°F / from 3°F in January to 64°F in July. Total annual precipitation is 33.0 inches, with August being the wettest month (3.7") and February the driest (1.6").