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Weather & Climate in Bayham, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bayham experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 22°F in January while summers reach 70°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 11.5 inches of snow annually. The city sits at an elevation of 728 feet.
Temperature
22°F Jan (-5°C)
70°F Jul (21°C)
| Annual Average | 46.6°F |
| 14% below US avg | |
| January Average | 22°F (-5°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 265 days/yr |
Geography
| Elevation | 728 ft (222 m) |
| Area | 94.4 sq mi (244.6 km²) |
| Population Density | 75/sq mi |
| Coordinates | 42.7500°N, 80.7880°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
38 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Sep 25, 1998 | 2 km SW of Adamsville, Pennsylvania | M4.5 | 143 km | 5 km |
| Jun 10, 2019 | 1 km NW of Timberlake, Ohio | M4.0 | 131 km | 2 km |
| Jan 26, 2001 | 8 km NNW of Edgewood, Ohio | M3.9 | 90 km | 5 km |
| Jun 30, 2003 | 6 km NW of Perry, Ohio | M3.6 | 111 km | 5 km |
| Oct 16, 1993 | 8 km SSE of Madison, Ohio | M3.6 | 118 km | 5 km |
| Aug 28, 2023 | 7 km SE of Madison, Ohio | M3.6 | 114 km | 5 km |
| Jun 20, 2006 | 9 km WNW of North Perry, Ohio | M3.5 | 108 km | 5 km |
| Mar 15, 1992 | 15 km NW of North Perry, Ohio | M3.5 | 101 km | 5 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 94 km | 5 km |
| Jan 26, 1991 | 1 km NNE of Mayfield Heights, Ohio | M3.4 | 146 km | 5 km |
| Jun 30, 2004 | 2 km WNW of Madison, Ohio | M3.3 | 111 km | 5 km |
| Jul 1, 2013 | 5 km NNW of Fairport Harbor, Ohio | M3.2 | 114 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 126 km | 5 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 119 km | 5 km |
| Apr 25, 2010 | 2 km WNW of Madison, Ohio | M3.0 | 111 km | 5 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 150 km | 5 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 140 km | 6 km |
| Feb 23, 1995 | 3 km W of Ashtabula, Ohio | M2.9 | 98 km | 5 km |
| Jan 4, 2022 | 3 km NW of Timberlake, Ohio | M2.8 | 131 km | 5 km |
| Sep 22, 1999 | 16 km NW of Mentor-on-the-Lake, Ohio | M2.8 | 117 km | 18 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 | - | 54 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 137 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-5°C) | 2.8 in | Coldest |
| February | 23°F (-5°C) | 2.2 in | Driest |
| March | 33°F (0°C) | 3.0 in | |
| April | 44°F (7°C) | 3.4 in | |
| May | 56°F (13°C) | 3.2 in | |
| June | 65°F (18°C) | 3.5 in | |
| July | 70°F (21°C) | 3.4 in | Warmest |
| August | 68°F (20°C) | 3.5 in | |
| September | 61°F (16°C) | 3.7 in | |
| October | 50°F (10°C) | 3.3 in | |
| November | 39°F (4°C) | 3.9 in | Wettest |
| December | 28°F (-2°C) | 3.5 in |
Bayham has a seasonal temperature swing of 47°F / from 22°F in January to 70°F in July. Total annual precipitation is 39.3 inches, with November being the wettest month (3.9") and February the driest (2.2").