All Countries
Weather & Climate in South Frontenac, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
South Frontenac has a cool climate with an average annual temperature of 43°F (6°C). Winters average 15°F in January while summers reach 68°F in July. The area gets 268 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 37.6 inches. The area receives 11.0 inches of snow annually. The city sits at an elevation of 568 feet.
Temperature
15°F Jan (-9°C)
68°F Jul (20°C)
| Annual Average | 43.3°F |
| 20% below US avg | |
| January Average | 15°F (-9°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 268 days/yr |
Geography
| Elevation | 568 ft (173 m) |
| Area | 366.0 sq mi (948.0 km²) |
| Population Density | 55/sq mi |
| Coordinates | 44.5404°N, 76.4815°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
38 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 | 136 km | 13 km |
| May 17, 2013 | 20 km NNE of Shawville, Canada | M3.6 | 136 km | 11 km |
| Apr 23, 2023 | New York | M3.6 | 84 km | 9 km |
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 140 km | 18 km |
| Oct 20, 2013 | 34 km SSW of Petawawa, Canada | M3.6 | 141 km | 18 km |
| May 28, 2002 | 11 km WNW of Shawville, Canada | M3.4 | 122 km | 18 km |
| Jun 29, 2024 | 14 km W of Ellisburg, New York | M3.3 | 92 km | 5 km |
| Jun 11, 2008 | 6 km NNE of Buckingham, Canada | M3.3 | 149 km | 18 km |
| Jul 31, 1997 | 0 km WSW of Lyons Falls, New York | M3.2 | 135 km | 5 km |
| Sep 9, 2015 | 20 km NNE of Shawville, Canada | M3.2 | 137 km | 10 km |
| May 8, 2009 | 9 km E of Constance Bay, Canada | M3.1 | 114 km | 21 km |
| Jun 30, 2013 | 19 km NNE of Shawville, Canada | M3.1 | 135 km | 14 km |
| May 17, 2013 | 21 km NNE of Shawville, Canada | M3.1 | 137 km | 18 km |
| Feb 24, 2002 | 7 km WSW of Casselman, Canada | M3.1 | 133 km | 18 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 93 km | 18 km |
| Oct 13, 1997 | 18 km NW of Cranberry Lake, New York | M3.0 | 122 km | 4 km |
| Sep 4, 2004 | 3 km S of Massena, New York | M2.9 | 132 km | 4 km |
| Jul 21, 2011 | 27 km NW of Wakefield, Canada | M2.9 | 143 km | 15 km |
| Mar 7, 2008 | 7 km WSW of Casselman, Canada | M2.9 | 133 km | 7 km |
| May 30, 2013 | 20 km NNE of Shawville, Canada | M2.9 | 137 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 15°F (-9°C) | 3.0 in | Coldest |
| February | 17°F (-8°C) | 2.4 in | Driest |
| March | 27°F (-3°C) | 2.6 in | |
| April | 41°F (5°C) | 2.9 in | |
| May | 54°F (12°C) | 3.3 in | |
| June | 63°F (17°C) | 3.2 in | |
| July | 68°F (20°C) | 2.8 in | Warmest |
| August | 67°F (20°C) | 3.4 in | |
| September | 59°F (15°C) | 4.0 in | Wettest |
| October | 48°F (9°C) | 3.3 in | |
| November | 37°F (3°C) | 3.7 in | |
| December | 24°F (-5°C) | 3.0 in |
South Frontenac has a seasonal temperature swing of 53°F / from 15°F in January to 68°F in July. Total annual precipitation is 37.6 inches, with September being the wettest month (4.0") and February the driest (2.4").