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Weather & Climate in Frontenac, QC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Frontenac has a cool climate with an average annual temperature of 38°F (3°C). Winters average 10°F in January while summers reach 63°F in July. The area gets 253 sunny days per year, above the national average. Annual precipitation totals 45.8 inches (wetter than the 38-inch national average). The area receives 20.2 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 1,588 feet.
Temperature
10°F Jan (-12°C)
63°F Jul (17°C)
| Annual Average | 37.9°F |
| 30% below US avg | |
| January Average | 10°F (-12°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 1,588 ft (484 m) |
| Area | 86.3 sq mi (223.6 km²) |
| Population Density | 21/sq mi |
| Coordinates | 45.5726°N, 70.8316°W |
| Timezone | America/Montreal |
Precipitation & Snow
Air Quality
Earthquake History
29 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 | 144 km | 23 km |
| Jan 17, 2000 | 4 km NNE of Dixfield, Maine | M3.6 | 116 km | 16 km |
| Jul 23, 2010 | 18 km S of Saint-Antoine-de-Tilly, Canada | M3.5 | 120 km | 18 km |
| Apr 3, 1997 | 9 km ENE of Saint-Cyrille-de-Wendover, Canada | M3.5 | 125 km | 5 km |
| Aug 27, 2011 | 24 km SSW of Montmagny, Canada | M3.5 | 135 km | 18 km |
| Jan 3, 2000 | 4 km W of Leeds, Maine | M3.5 | 150 km | 10 km |
| Jan 4, 2018 | 18 km SSE of Beaupré, Canada | M3.4 | 148 km | 18 km |
| Apr 29, 2009 | 7 km SSE of L'Ange-Gardien, Canada | M3.4 | 143 km | 18 km |
| Dec 25, 1999 | 4 km NE of Saint Albans, Maine | M3.0 | 134 km | 5 km |
| Apr 15, 2010 | 7 km WNW of Valcourt, Canada | M3.0 | 123 km | 18 km |
| Nov 8, 1997 | 2 km SW of L'Ancienne-Lorette, Canada | M2.9 | 141 km | 23 km |
| Nov 9, 2009 | southern Quebec, Canada | M2.9 | 123 km | 18 km |
| Jan 3, 2018 | 18 km SSE of Beaupré, Canada | M2.9 | 148 km | 18 km |
| Feb 4, 2022 | 0 km SSW of Gorham, New Hampshire | M2.9 | 135 km | 8 km |
| Nov 6, 1997 | 4 km SSW of L'Ancienne-Lorette, Canada | M2.9 | 138 km | 18 km |
| Nov 6, 1997 | St. Lawrence Valley region, Quebec, Canada | M2.8 | 141 km | 18 km |
| Apr 15, 2010 | 9 km W of Valcourt, Canada | M2.7 | 125 km | 18 km |
| Apr 21, 2010 | 7 km WNW of Valcourt, Canada | M2.7 | 122 km | 18 km |
| Aug 13, 2016 | southern Quebec, Canada | M2.7 | 136 km | 1 km |
| Aug 9, 2021 | 12 km E of Bécancour, Canada | M2.7 | 142 km | 20 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 10°F (-12°C) | 3.4 in | Coldest |
| February | 12°F (-11°C) | 2.9 in | Driest |
| March | 23°F (-5°C) | 3.3 in | |
| April | 36°F (2°C) | 3.1 in | |
| May | 50°F (10°C) | 3.8 in | |
| June | 58°F (15°C) | 4.7 in | |
| July | 63°F (17°C) | 4.5 in | Warmest |
| August | 62°F (16°C) | 4.9 in | Wettest |
| September | 53°F (12°C) | 4.0 in | |
| October | 42°F (6°C) | 3.9 in | |
| November | 31°F (-1°C) | 3.9 in | |
| December | 17°F (-9°C) | 3.7 in |
Frontenac has a seasonal temperature swing of 54°F / from 10°F in January to 63°F in July. Total annual precipitation is 45.8 inches, with August being the wettest month (4.9") and February the driest (2.9").