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Weather & Climate in Perth East, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Perth East 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 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 39.6 inches. The area receives 11.3 inches of snow annually. The city sits at an elevation of 1,237 feet.
Temperature
19°F Jan (-7°C)
68°F Jul (20°C)
| Annual Average | 44.1°F |
| 18% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 264 days/yr |
Geography
| Elevation | 1,237 ft (377 m) |
| Area | 274.9 sq mi (711.9 km²) |
| Population Density | 46/sq mi |
| Coordinates | 43.4948°N, 80.9736°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.8.
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 138 km | 7 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 124 km | 4 km |
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 136 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 | - | 134 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 124 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 3.2 in | Coldest |
| February | 20°F (-7°C) | 2.4 in | Driest |
| March | 29°F (-2°C) | 2.6 in | |
| April | 42°F (5°C) | 3.2 in | |
| May | 54°F (12°C) | 3.4 in | |
| June | 63°F (17°C) | 3.3 in | |
| July | 68°F (20°C) | 3.7 in | Warmest |
| August | 66°F (19°C) | 3.6 in | |
| September | 59°F (15°C) | 3.8 in | |
| October | 48°F (9°C) | 3.4 in | |
| November | 37°F (3°C) | 4.0 in | Wettest |
| December | 25°F (-4°C) | 3.2 in |
Perth East has a seasonal temperature swing of 49°F / from 19°F in January to 68°F in July. Total annual precipitation is 39.6 inches, with November being the wettest month (4.0") and February the driest (2.4").