Weather & Climate in The Blue Mountains, ON

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

The Blue Mountains has a cool climate with an average annual temperature of 45°F (7°C). Winters average 22°F in January while summers reach 67°F in July. Annual precipitation totals 39.7 inches. The area receives 13.3 inches of snow annually. The city sits at an elevation of 656 feet.

Temperature

22°F Jan (-6°C) 67°F Jul (19°C)
Annual Average44.5°F
18% below US avg
January Average22°F (-6°C)
July Average67°F (19°C)

Geography

Elevation656 ft (200 m)
Area109.9 sq mi (284.6 km²)
Population Density86/sq mi
Coordinates44.5584°N, 80.4580°W
TimezoneAmerica/Toronto

Precipitation & Snow

Annual Rainfall 39.7"
4% above US avg
Snowfall 13.3"
Wettest Month (Jan) 4.06"
Driest Month (Mar) 2.52"

Air Quality

Earthquake History

4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.

Nov 26, 1999 14 km ESE of Centennial Scarborough, Canada M3.8 150 km 13 km
May 24, 2000 4 km ENE of Centennial Scarborough, Canada M3.1 137 km 18 km
Jul 29, 2012 17 km SSW of Parry Sound, Canada M2.5 76 km 5 km
May 17, 2010 19 km WNW of Gravenhurst, Canada M2.5 86 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 - 65 km
Source: NOAA/NCEI Historical Tsunami Database.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 22°F (-6°C) 4.1 in Coldest, Wettest
February 22°F (-6°C) 2.8 in
March 29°F (-2°C) 2.5 in Driest
April 40°F (4°C) 2.6 in
May 51°F (11°C) 3.3 in
June 61°F (16°C) 3.2 in
July 67°F (19°C) 2.8 in Warmest
August 66°F (19°C) 3.1 in
September 60°F (15°C) 3.8 in
October 50°F (10°C) 3.5 in
November 39°F (4°C) 4.0 in
December 28°F (-2°C) 4.0 in

The Blue Mountains has a seasonal temperature swing of 45°F / from 22°F in January to 67°F in July. Total annual precipitation is 39.7 inches, with January being the wettest month (4.1") and March the driest (2.5").

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