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Weather & Climate in Thamesford, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Thamesford has a cool climate with an average annual temperature of 45°F (7°C). Winters average 20°F in January while summers reach 68°F in July. The area gets 265 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 39.3 inches. The area receives 11.4 inches of snow annually. The city sits at an elevation of 948 feet.
Temperature
20°F Jan (-7°C)
68°F Jul (20°C)
| Annual Average | 45.3°F |
| 16% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 265 days/yr |
Geography
| Elevation | 948 ft (289 m) |
| Area | 204.3 sq mi (529.2 km²) |
| Population Density | 13/sq mi |
| Coordinates | 43.0571°N, 80.9988°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
26 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Jan 26, 2001 | 8 km NNW of Edgewood, Ohio | M3.9 | 125 km | 5 km |
| Aug 28, 2023 | 7 km SE of Madison, Ohio | M3.6 | 147 km | 5 km |
| Jun 30, 2003 | 6 km NW of Perry, Ohio | M3.6 | 141 km | 5 km |
| Mar 15, 1992 | 15 km NW of North Perry, Ohio | M3.5 | 129 km | 5 km |
| Jun 20, 2006 | 9 km WNW of North Perry, Ohio | M3.5 | 137 km | 5 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 130 km | 5 km |
| Jun 30, 2004 | 2 km WNW of Madison, Ohio | M3.3 | 142 km | 5 km |
| Jul 1, 2013 | 5 km NNW of Fairport Harbor, Ohio | M3.2 | 143 km | 5 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 146 km | 5 km |
| Apr 25, 2010 | 2 km WNW of Madison, Ohio | M3.0 | 142 km | 5 km |
| Feb 23, 1995 | 3 km W of Ashtabula, Ohio | M2.9 | 133 km | 5 km |
| Sep 22, 1999 | 16 km NW of Mentor-on-the-Lake, Ohio | M2.8 | 142 km | 18 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 142 km | 7 km |
| Apr 28, 2002 | Ohio | M2.7 | 138 km | 5 km |
| Jun 1, 2024 | 1 km E of Madison, Ohio | M2.6 | 143 km | 5 km |
| Jan 5, 2024 | 3 km SE of Madison, Ohio | M2.6 | 145 km | 9 km |
| Feb 10, 2006 | 6 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 149 km | 5 km |
| Feb 14, 2009 | 4 km WSW of Geneva-on-the-Lake, Ohio | M2.6 | 135 km | 5 km |
| Jun 10, 2010 | 8 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 149 km | 5 km |
| Jan 6, 2006 | 10 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 148 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 | - | 85 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 114 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 2.9 in | Coldest |
| February | 22°F (-6°C) | 2.4 in | Driest |
| March | 31°F (-1°C) | 2.8 in | |
| April | 43°F (6°C) | 3.3 in | |
| May | 55°F (13°C) | 3.4 in | |
| June | 64°F (18°C) | 3.4 in | |
| July | 68°F (20°C) | 3.6 in | Warmest |
| August | 67°F (19°C) | 3.4 in | |
| September | 60°F (15°C) | 3.7 in | |
| October | 49°F (9°C) | 3.3 in | |
| November | 38°F (3°C) | 3.9 in | Wettest |
| December | 27°F (-3°C) | 3.4 in |
Thamesford has a seasonal temperature swing of 48°F / from 20°F in January to 68°F in July. Total annual precipitation is 39.4 inches, with November being the wettest month (3.9") and February the driest (2.4").