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Weather & Climate in Port Perry, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Port Perry experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 27°F in January while summers reach 70°F in July. The area gets 241 sunny days per year, above the national average. Annual precipitation totals 40.5 inches. The area receives 55.0 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 820 feet.
Temperature
27°F Jan (-3°C)
70°F Jul (21°C)
| Annual Average | 47.7°F |
| 12% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 241 days/yr |
Geography
| Elevation | 820 ft (250 m) |
| Area | 199.5 sq mi (516.7 km²) |
| Population Density | 48/sq mi |
| Coordinates | 44.1068°N, 78.9444°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
17 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 | 44 km | 13 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 139 km | 6 km |
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 87 km | 18 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 36 km | 18 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 121 km | 18 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 41 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 124 km | 5 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 72 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 74 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 92 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 123 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 79 km | 8 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 89 km | 5 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 89 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 80 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 112 km | 5 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 68 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 2.4 in | |
| February | 19°F (-7°C) | 2.1 in | Coldest, Driest |
| March | 28°F (-2°C) | 2.1 in | |
| April | 41°F (5°C) | 3.0 in | |
| May | 53°F (12°C) | 3.5 in | |
| June | 62°F (17°C) | 3.1 in | |
| July | 70°F (21°C) | 2.7 in | Warmest |
| August | 66°F (19°C) | 3.4 in | |
| September | 58°F (15°C) | 3.5 in | Wettest |
| October | 47°F (8°C) | 3.1 in | |
| November | 36°F (2°C) | 3.4 in | |
| December | 24°F (-4°C) | 2.5 in |
Port Perry has a seasonal temperature swing of 51°F / from 19°F in February to 70°F in July. Total annual precipitation is 34.7 inches, with September being the wettest month (3.5") and February the driest (2.1").