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 Average | 44.5°F |
| 18% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 67°F (19°C) |
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").