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. 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) |
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").