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Weather & Climate in Walpole Island, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Walpole Island experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 24°F in January while summers reach 71°F in July. The area gets 277 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 32.7 inches. The area receives 9.0 inches of snow annually. The city sits at an elevation of 581 feet.
Temperature
24°F Jan (-5°C)
71°F Jul (22°C)
| Annual Average | 47.8°F |
| 11% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 277 days/yr |
Geography
| Elevation | 581 ft (177 m) |
| Area | 187.3 sq mi (485.1 km²) |
| Population Density | 10/sq mi |
| Coordinates | 42.6152°N, 82.5140°W |
| Timezone | America/Detroit |
Precipitation & Snow
Air Quality
Earthquake History
27 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.
| Jun 10, 2019 | 1 km NW of Timberlake, Ohio | M4.0 | 136 km | 2 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 | 131 km | 5 km |
| Jun 20, 2006 | 9 km WNW of North Perry, Ohio | M3.5 | 136 km | 5 km |
| Apr 20, 2018 | Michigan | M3.4 | 69 km | 3 km |
| Jan 26, 1991 | 1 km NNE of Mayfield Heights, Ohio | M3.4 | 149 km | 5 km |
| Jul 1, 2013 | 5 km NNW of Fairport Harbor, Ohio | M3.2 | 136 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 134 km | 5 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 131 km | 5 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 51 km | 5 km |
| Apr 12, 2007 | 11 km NW of Put-in-Bay, Ohio | M2.8 | 105 km | 5 km |
| Sep 22, 1999 | 16 km NW of Mentor-on-the-Lake, Ohio | M2.8 | 123 km | 18 km |
| Jan 4, 2022 | 3 km NW of Timberlake, Ohio | M2.8 | 135 km | 5 km |
| Apr 28, 2002 | Ohio | M2.7 | 127 km | 5 km |
| Mar 8, 2013 | 5 km NNW of Timberlake, Ohio | M2.7 | 133 km | 5 km |
| Jun 10, 2010 | 8 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 131 km | 5 km |
| Feb 10, 2006 | 6 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 132 km | 5 km |
| May 20, 2023 | 3 km SSE of Walbridge, Ohio | M2.6 | 143 km | 6 km |
| Jan 6, 2006 | 10 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 129 km | 5 km |
| May 14, 2017 | 18 km ENE of Leamington, Canada | M2.6 | 54 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 | - | 129 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 55 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 2.0 in | Coldest, Driest |
| February | 25°F (-4°C) | 2.0 in | |
| March | 33°F (1°C) | 2.4 in | |
| April | 44°F (7°C) | 2.9 in | |
| May | 56°F (13°C) | 2.9 in | |
| June | 66°F (19°C) | 3.1 in | |
| July | 71°F (22°C) | 3.0 in | Warmest |
| August | 70°F (21°C) | 3.2 in | |
| September | 63°F (17°C) | 3.4 in | Wettest |
| October | 52°F (11°C) | 2.3 in | |
| November | 41°F (5°C) | 2.9 in | |
| December | 30°F (-1°C) | 2.6 in |
Walpole Island has a seasonal temperature swing of 47°F / from 24°F in January to 71°F in July. Total annual precipitation is 32.7 inches, with September being the wettest month (3.4") and January the driest (2.0").