Weather & Climate in Deep River, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Deep River has a cool climate with an average annual temperature of 39°F (4°C). Winters average 9°F in January while summers reach 66°F in July. Annual precipitation totals 34.6 inches. The area receives 11.9 inches of snow annually. The city sits at an elevation of 492 feet.
Temperature
9°F Jan (-13°C)
66°F Jul (19°C)
| Annual Average | 39.4°F |
| 27% below US avg | |
| January Average | 9°F (-13°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 492 ft (150 m) |
| Area | 19.4 sq mi (50.3 km²) |
| Population Density | 215/sq mi |
| Coordinates | 46.1001°N, 77.4995°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
45 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.1.
| May 17, 2013 | 20 km NNE of Shawville, Canada | M5.1 | 97 km | 13 km |
| Jan 1, 2000 | 17 km NNE of Notre-Dame-du-Lac, Canada | M4.7 | 140 km | 18 km |
| Jun 16, 1991 | 78 km NW of Saint-Boniface, Canada | M4.5 | 117 km | 18 km |
| Oct 12, 2003 | 63 km NNW of Saint-Boniface, Canada | M4.2 | 133 km | 18 km |
| Mar 19, 2001 | 65 km NNW of Saint-Boniface, Canada | M3.9 | 141 km | 18 km |
| Mar 6, 1991 | 49 km NNW of Fort-Coulonge, Canada | M3.9 | 52 km | 18 km |
| Sep 7, 2002 | southern Quebec, Canada | M3.7 | 133 km | 18 km |
| Feb 26, 1998 | 33 km SW of Saint-Raphaël, Canada | M3.7 | 88 km | 18 km |
| Jul 13, 2019 | 78 km NNW of Saint-Boniface, Canada | M3.7 | 149 km | 15 km |
| May 17, 2013 | 20 km NNE of Shawville, Canada | M3.6 | 96 km | 11 km |
| Oct 20, 2013 | 34 km SSW of Petawawa, Canada | M3.6 | 55 km | 18 km |
| Mar 29, 2011 | 66 km NE of Deep River, Canada | M3.5 | 67 km | 18 km |
| May 14, 2016 | 8 km NW of Petawawa, Canada | M3.5 | 20 km | 18 km |
| Oct 10, 1995 | southern Quebec, Canada | M3.5 | 104 km | 18 km |
| Mar 31, 2005 | 27 km ESE of Maniwaki, Canada | M3.4 | 145 km | 18 km |
| May 28, 2002 | 11 km WNW of Shawville, Canada | M3.4 | 86 km | 18 km |
| Jun 3, 1995 | southern Quebec, Canada | M3.4 | 138 km | 18 km |
| Apr 7, 2024 | 72 km NNW of Saint-Boniface, Canada | M3.3 | 148 km | 10 km |
| Aug 27, 2021 | 55 km NW of Saint-Boniface, Canada | M3.3 | 113 km | 14 km |
| May 2, 2015 | 12 km NE of Notre-Dame-du-Lac, Canada | M3.3 | 136 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 9°F (-13°C) | 2.2 in | Coldest |
| February | 12°F (-11°C) | 1.9 in | Driest |
| March | 23°F (-5°C) | 2.3 in | |
| April | 38°F (3°C) | 2.5 in | |
| May | 52°F (11°C) | 3.3 in | |
| June | 61°F (16°C) | 3.4 in | |
| July | 66°F (19°C) | 3.4 in | Warmest |
| August | 64°F (18°C) | 3.4 in | |
| September | 56°F (13°C) | 3.5 in | Wettest |
| October | 44°F (7°C) | 3.3 in | |
| November | 32°F (0°C) | 3.0 in | |
| December | 17°F (-8°C) | 2.5 in |
Deep River has a seasonal temperature swing of 57°F / from 9°F in January to 66°F in July. Total annual precipitation is 34.6 inches, with September being the wettest month (3.5") and February the driest (1.9").