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Weather & Climate in Thetford-Mines, QC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Thetford-Mines has a cool climate with an average annual temperature of 41°F (5°C). Winters average 13°F in January while summers reach 66°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 54.4 inches (wetter than the 38-inch national average). The area receives 95.6 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 1,043 feet.
Temperature
13°F Jan (-11°C)
66°F Jul (19°C)
| Annual Average | 41.4°F |
| 23% below US avg | |
| January Average | 13°F (-11°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 249 days/yr |
Geography
| Elevation | 1,043 ft (318 m) |
| Area | 87.3 sq mi (226.0 km²) |
| Population Density | 299/sq mi |
| Coordinates | 46.0937°N, 71.3054°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
41 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Nov 6, 1997 | 4 km W of L'Ancienne-Lorette, Canada | M4.8 | 79 km | 23 km |
| Aug 4, 2012 | 24 km SSW of Baie-Saint-Paul, Canada | M3.8 | 138 km | 18 km |
| Sep 1, 2024 | 5 km SE of Pierreville, Canada | M3.8 | 112 km | 1 km |
| Apr 7, 2006 | 16 km S of Baie-Saint-Paul, Canada | M3.7 | 148 km | 0 km |
| Jul 23, 2010 | 18 km S of Saint-Antoine-de-Tilly, Canada | M3.5 | 51 km | 18 km |
| Aug 27, 2011 | 24 km SSW of Montmagny, Canada | M3.5 | 91 km | 18 km |
| Aug 7, 2010 | 8 km WNW of Montmagny, Canada | M3.5 | 114 km | 25 km |
| Apr 3, 1997 | 9 km ENE of Saint-Cyrille-de-Wendover, Canada | M3.5 | 80 km | 5 km |
| Apr 29, 2009 | 7 km SSE of L'Ange-Gardien, Canada | M3.4 | 87 km | 18 km |
| Jan 4, 2018 | 18 km SSE of Beaupré, Canada | M3.4 | 99 km | 18 km |
| Dec 11, 2013 | 9 km W of St-Jean-Port-Joli, Canada | M3.4 | 143 km | 13 km |
| Aug 29, 2019 | 15 km NW of St-Jean-Port-Joli, Canada | M3.3 | 150 km | 4 km |
| Apr 24, 2010 | 11 km NNW of Château-Richer, Canada | M3.3 | 109 km | 18 km |
| Mar 6, 2010 | 1 km WNW of Beaupré, Canada | M3.2 | 110 km | 18 km |
| Oct 8, 2010 | 16 km NW of Montmagny, Canada | M3.1 | 122 km | 28 km |
| May 11, 2006 | 7 km W of Nicolet, Canada | M3.0 | 109 km | 5 km |
| May 22, 2017 | 4 km NW of Beaupré, Canada | M3.0 | 112 km | 18 km |
| Apr 15, 2010 | 7 km WNW of Valcourt, Canada | M3.0 | 106 km | 18 km |
| Nov 8, 1997 | 2 km SW of L'Ancienne-Lorette, Canada | M2.9 | 77 km | 23 km |
| Nov 9, 2009 | southern Quebec, Canada | M2.9 | 103 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 13°F (-11°C) | 3.6 in | |
| February | 11°F (-12°C) | 3.1 in | Coldest, Driest |
| March | 22°F (-6°C) | 3.3 in | |
| April | 35°F (2°C) | 3.3 in | |
| May | 50°F (10°C) | 3.9 in | |
| June | 59°F (15°C) | 4.9 in | |
| July | 66°F (19°C) | 5.0 in | Warmest |
| August | 63°F (17°C) | 5.3 in | Wettest |
| September | 54°F (12°C) | 4.1 in | |
| October | 42°F (6°C) | 4.2 in | |
| November | 31°F (-0°C) | 4.0 in | |
| December | 17°F (-8°C) | 4.2 in |
Thetford-Mines has a seasonal temperature swing of 56°F / from 11°F in February to 66°F in July. Total annual precipitation is 48.9 inches, with August being the wettest month (5.3") and February the driest (3.1").