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Weather & Climate in Mapleton, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mapleton experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 29°F in January while summers reach 69°F in July. The area gets 238 sunny days per year, above the national average. Annual precipitation totals 37.1 inches. The area receives 49.5 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 1,365 feet.
Temperature
29°F Jan (-2°C)
69°F Jul (20°C)
| Annual Average | 47.8°F |
| 11% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 238 days/yr |
Geography
| Elevation | 1,365 ft (416 m) |
| Area | 206.8 sq mi (535.6 km²) |
| Population Density | 52/sq mi |
| Coordinates | 43.7175°N, 80.6893°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
5 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 | 136 km | 13 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 128 km | 18 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 140 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 122 km | 7 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 107 km | 4 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 | - | 145 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.1 in | |
| February | 18°F (-8°C) | 2.5 in | Coldest, Driest |
| March | 28°F (-3°C) | 2.5 in | |
| April | 41°F (5°C) | 3.0 in | |
| May | 53°F (12°C) | 3.6 in | |
| June | 62°F (17°C) | 3.3 in | |
| July | 69°F (20°C) | 3.6 in | Warmest |
| August | 65°F (18°C) | 3.9 in | |
| September | 58°F (15°C) | 4.0 in | Wettest |
| October | 47°F (8°C) | 3.4 in | |
| November | 36°F (2°C) | 3.9 in | |
| December | 24°F (-4°C) | 3.2 in |
Mapleton has a seasonal temperature swing of 50°F / from 18°F in February to 69°F in July. Total annual precipitation is 40.0 inches, with September being the wettest month (4.0") and February the driest (2.5").