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Weather & Climate in Corunna, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Corunna experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 32°F in January while summers reach 71°F in July. The area gets 234 sunny days per year, above the national average. Annual precipitation totals 37.1 inches. The area receives 28.7 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 630 feet.
Temperature
32°F Jan (0°C)
71°F Jul (22°C)
| Annual Average | 50.2°F |
| 7% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 234 days/yr |
Geography
| Elevation | 630 ft (192 m) |
| Area | 187.3 sq mi (485.1 km²) |
| Population Density | 30/sq mi |
| Coordinates | 42.8834°N, 82.4331°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
15 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.
| Mar 15, 1992 | 15 km NW of North Perry, Ohio | M3.5 | 146 km | 5 km |
| Apr 20, 2018 | Michigan | M3.4 | 98 km | 3 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 150 km | 5 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 81 km | 5 km |
| Apr 12, 2007 | 11 km NW of Put-in-Bay, Ohio | M2.8 | 135 km | 5 km |
| Sep 22, 1999 | 16 km NW of Mentor-on-the-Lake, Ohio | M2.8 | 142 km | 18 km |
| Apr 28, 2002 | Ohio | M2.7 | 144 km | 5 km |
| May 14, 2017 | 18 km ENE of Leamington, Canada | M2.6 | 83 km | 5 km |
| Jan 6, 2006 | 10 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 148 km | 5 km |
| Jun 10, 2010 | 8 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 150 km | 5 km |
| Sep 7, 2012 | 17 km ESE of Stony Point, Michigan | M2.5 | 125 km | 5 km |
| Mar 8, 2010 | 7 km ENE of Grosse Ile, Michigan | M2.5 | 96 km | 18 km |
| Feb 7, 2016 | 6 km W of Put-in-Bay, Ohio | M2.5 | 142 km | 5 km |
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 2 km | 5 km |
| Feb 17, 2013 | 31 km E of Leamington, Canada | M2.5 | 98 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1823 | LAKE ERIE | Unknown | 2.7 m | - | 135 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 24 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 2.1 in | |
| February | 24°F (-5°C) | 2.0 in | Coldest, Driest |
| March | 33°F (1°C) | 2.3 in | |
| April | 44°F (7°C) | 2.9 in | |
| May | 56°F (13°C) | 3.0 in | |
| June | 66°F (19°C) | 3.3 in | |
| July | 71°F (22°C) | 2.8 in | Warmest |
| August | 70°F (21°C) | 3.1 in | |
| September | 63°F (17°C) | 3.9 in | Wettest |
| October | 52°F (11°C) | 2.8 in | |
| November | 40°F (4°C) | 3.2 in | |
| December | 29°F (-2°C) | 2.6 in |
Corunna has a seasonal temperature swing of 47°F / from 24°F in February to 71°F in July. Total annual precipitation is 33.9 inches, with September being the wettest month (3.9") and February the driest (2.0").