Weather & Climate in Harley, ON

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

Harley experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 21°F in January while summers reach 69°F in July. Annual precipitation totals 36.1 inches. The area receives 9.8 inches of snow annually. The city sits at an elevation of 873 feet.

Temperature

21°F Jan (-6°C) 69°F Jul (21°C)
Annual Average45.7°F
15% below US avg
January Average21°F (-6°C)
July Average69°F (21°C)

Geography

Elevation873 ft (266 m)
Area35.7 sq mi (92.3 km²)
Population Density15/sq mi
Coordinates43.0641°N, 80.4818°W
TimezoneAmerica/Toronto

Precipitation & Snow

Annual Rainfall 36.1"
5% below US avg
Snowfall 9.8"
Wettest Month (Jul) 3.62"
Driest Month (Feb) 2.01"

Air Quality

Earthquake History

17 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.

Jan 26, 2001 8 km NNW of Edgewood, Ohio M3.9 128 km 5 km
Feb 6, 2023 1 km NE of West Seneca, New York M3.8 140 km 6 km
Nov 26, 1999 14 km ESE of Centennial Scarborough, Canada M3.8 140 km 13 km
Jun 20, 2006 9 km WNW of North Perry, Ohio M3.5 149 km 5 km
Mar 15, 1992 15 km NW of North Perry, Ohio M3.5 143 km 5 km
Jun 3, 2001 3 km N of Edgewood, Ohio M3.4 131 km 5 km
May 24, 2000 4 km ENE of Centennial Scarborough, Canada M3.1 139 km 18 km
May 8, 2018 14 km SSE of Ajax, Canada M3.0 145 km 5 km
May 25, 1995 3 km NW of Amherst, New York M3.0 134 km 5 km
Jun 16, 2004 11 km NNW of Angola on the Lake, New York M2.9 119 km 6 km
Feb 23, 1995 3 km W of Ashtabula, Ohio M2.9 136 km 5 km
Mar 28, 2005 16 km NW of Virgil, Canada M2.8 101 km 7 km
Jan 20, 2001 0 km NNW of Edgewood, Ohio M2.6 134 km 5 km
Feb 14, 2009 4 km WSW of Geneva-on-the-Lake, Ohio M2.6 143 km 5 km
Sep 20, 2009 20 km ESE of Oakville, Canada M2.6 92 km 4 km
Jul 17, 2003 1 km SE of Edgewood, Ohio M2.5 136 km 3 km
Dec 17, 1990 5 km SSE of Middleboro, Pennsylvania M2.5 127 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
1823 LAKE ERIE Unknown 2.7 m - 96 km
Source: NOAA/NCEI Historical Tsunami Database.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 21°F (-6°C) 2.4 in Coldest
February 22°F (-6°C) 2.0 in Driest
March 31°F (-0°C) 2.5 in
April 43°F (6°C) 3.1 in
May 55°F (13°C) 3.2 in
June 64°F (18°C) 3.1 in
July 69°F (21°C) 3.6 in Warmest, Wettest
August 68°F (20°C) 3.3 in
September 60°F (16°C) 3.4 in
October 49°F (9°C) 3.0 in
November 38°F (4°C) 3.5 in
December 27°F (-3°C) 2.9 in

Harley has a seasonal temperature swing of 48°F / from 21°F in January to 69°F in July. Total annual precipitation is 36.1 inches, with July being the wettest month (3.6") and February the driest (2.0").

View full profile of Harley, ON →