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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. The area gets 264 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 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 Average | 44.5°F |
| 18% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 264 days/yr |
Geography
| Elevation | 656 ft (200 m) |
| Area | 109.9 sq mi (284.6 km²) |
| Population Density | 86/sq mi |
| Coordinates | 44.5584°N, 80.4580°W |
| Timezone | America/Toronto |
Precipitation & Snow
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").