All Countries
Weather & Climate in West Perth, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
West Perth has a cool climate with an average annual temperature of 44°F (7°C). Winters average 19°F in January while summers reach 68°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 43.3 inches. The area receives 13.9 inches of snow annually. The city sits at an elevation of 1,119 feet.
Temperature
19°F Jan (-7°C)
68°F Jul (20°C)
| Annual Average | 44.4°F |
| 18% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 1,119 ft (341 m) |
| Area | 223.5 sq mi (578.9 km²) |
| Population Density | 40/sq mi |
| Coordinates | 43.4750°N, 81.2514°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.6.
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 147 km | 4 km |
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 116 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
2 tsunamis 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 | - | 133 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 102 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 3.6 in | Coldest |
| February | 20°F (-7°C) | 3.0 in | |
| March | 29°F (-2°C) | 3.0 in | |
| April | 42°F (5°C) | 3.1 in | |
| May | 54°F (12°C) | 3.4 in | |
| June | 63°F (17°C) | 2.9 in | Driest |
| July | 68°F (20°C) | 3.4 in | Warmest |
| August | 66°F (19°C) | 3.8 in | |
| September | 60°F (15°C) | 4.6 in | Wettest |
| October | 48°F (9°C) | 3.9 in | |
| November | 37°F (3°C) | 4.4 in | |
| December | 26°F (-3°C) | 4.3 in |
West Perth has a seasonal temperature swing of 49°F / from 19°F in January to 68°F in July. Total annual precipitation is 43.3 inches, with September being the wettest month (4.6") and June the driest (2.9").