Weather & Climate in West Grey, ON

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

West Grey has a cool climate with an average annual temperature of 43°F (6°C). Winters average 18°F in January while summers reach 67°F in July. Annual precipitation totals 42.2 inches. The area receives 13.7 inches of snow annually. The city sits at an elevation of 1,030 feet.

Temperature

18°F Jan (-8°C) 67°F Jul (19°C)
Annual Average43.2°F
20% below US avg
January Average18°F (-8°C)
July Average67°F (19°C)

Geography

Elevation1,030 ft (314 m)
Area337.9 sq mi (875.2 km²)
Population Density39/sq mi
Coordinates44.1554°N, 80.8836°W
TimezoneAmerica/Toronto

Precipitation & Snow

Annual Rainfall 42.2"
11% above US avg
Snowfall 13.7"
Wettest Month (Sep) 4.21"
Driest Month (Mar) 2.72"

Air Quality

Earthquake History

4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.1.

May 24, 2000 4 km ENE of Centennial Scarborough, Canada M3.1 148 km 18 km
Sep 20, 2009 20 km ESE of Oakville, Canada M2.6 144 km 4 km
Jul 29, 2012 17 km SSW of Parry Sound, Canada M2.5 131 km 5 km
May 17, 2010 19 km WNW of Gravenhurst, Canada M2.5 141 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: 2.7 m (9 ft).

Year Location Cause Max Wave Deaths Distance
1855 OWEN SOUND, LAKE HURON Unknown 2.7 m - 94 km
Source: NOAA/NCEI Historical Tsunami Database.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 18°F (-8°C) 3.9 in Coldest
February 19°F (-7°C) 3.0 in
March 28°F (-3°C) 2.7 in Driest
April 40°F (5°C) 2.9 in
May 53°F (11°C) 3.4 in
June 62°F (16°C) 3.2 in
July 67°F (19°C) 3.4 in Warmest
August 65°F (19°C) 3.9 in
September 59°F (15°C) 4.2 in Wettest
October 48°F (9°C) 3.6 in
November 36°F (2°C) 4.0 in
December 25°F (-4°C) 4.0 in

West Grey has a seasonal temperature swing of 48°F / from 18°F in January to 67°F in July. Total annual precipitation is 42.2 inches, with September being the wettest month (4.2") and March the driest (2.7").

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