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Weather & Climate in LaSalle, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
LaSalle experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 27°F in January while summers reach 74°F in July. The area gets 262 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 33.7 inches. The area receives 26.3 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 591 feet.
Temperature
27°F Jan (-3°C)
74°F Jul (23°C)
| Annual Average | 51.1°F |
| 5% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 262 days/yr |
Geography
| Elevation | 591 ft (180 m) |
| Area | 25.1 sq mi (65.0 km²) |
| Population Density | 1,305/sq mi |
| Coordinates | 42.2448°N, 83.0610°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
26 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 | 147 km | 2 km |
| Sep 2, 1994 | 5 km SSW of DeWitt, Michigan | M3.5 | 141 km | 5 km |
| Apr 20, 2018 | Michigan | M3.4 | 15 km | 3 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 147 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 147 km | 5 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 53 km | 5 km |
| Apr 12, 2007 | 11 km NW of Put-in-Bay, Ohio | M2.8 | 59 km | 5 km |
| Jan 4, 2022 | 3 km NW of Timberlake, Ohio | M2.8 | 146 km | 5 km |
| Sep 22, 1999 | 16 km NW of Mentor-on-the-Lake, Ohio | M2.8 | 139 km | 18 km |
| Apr 28, 2002 | Ohio | M2.7 | 146 km | 5 km |
| May 14, 2010 | 1 km ENE of Gibsonburg, Ohio | M2.7 | 97 km | 5 km |
| Mar 8, 2013 | 5 km NNW of Timberlake, Ohio | M2.7 | 145 km | 5 km |
| Nov 25, 1998 | 1 km SSW of New London, Ohio | M2.7 | 141 km | 5 km |
| Jan 6, 2006 | 10 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 143 km | 5 km |
| Jun 10, 2010 | 8 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 145 km | 5 km |
| May 14, 2017 | 18 km ENE of Leamington, Canada | M2.6 | 55 km | 5 km |
| Feb 10, 2006 | 6 km NW of Mentor-on-the-Lake, Ohio | M2.6 | 147 km | 5 km |
| May 20, 2023 | 3 km SSE of Walbridge, Ohio | M2.6 | 85 km | 6 km |
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 89 km | 5 km |
| Sep 7, 2012 | 17 km ESE of Stony Point, Michigan | M2.5 | 42 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 1.5 m (5 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | — | 109 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 1.9 in | Driest |
| February | 27°F (-3°C) | 1.9 in | Coldest |
| March | 36°F (2°C) | 2.7 in | |
| April | 47°F (8°C) | 3.1 in | |
| May | 59°F (15°C) | 3.1 in | |
| June | 68°F (20°C) | 3.4 in | |
| July | 74°F (23°C) | 3.3 in | Warmest |
| August | 71°F (22°C) | 3.3 in | |
| September | 64°F (18°C) | 3.5 in | Wettest |
| October | 52°F (11°C) | 2.5 in | |
| November | 41°F (5°C) | 3.1 in | |
| December | 30°F (-1°C) | 2.8 in |
LaSalle has a seasonal temperature swing of 47°F / from 27°F in February to 74°F in July. Total annual precipitation is 34.5 inches, with September being the wettest month (3.5") and January the driest (1.9").