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Weather & Climate in Cobourg, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Cobourg experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 30°F in January while summers reach 71°F in July. The area gets 253 sunny days per year, above the national average. Annual precipitation totals 36.1 inches. The area receives 43.3 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 276 feet.
Temperature
30°F Jan (-1°C)
71°F Jul (21°C)
| Annual Average | 49.0°F |
| 9% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 71°F (21°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 276 ft (84 m) |
| Area | 8.7 sq mi (22.4 km²) |
| Population Density | 2,372/sq mi |
| Coordinates | 43.9598°N, 78.1652°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
21 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 | 72 km | 13 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 132 km | 6 km |
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 24 km | 18 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 77 km | 18 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 68 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 120 km | 5 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 60 km | 18 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 30 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 27 km | 5 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 126 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 115 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 108 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 72 km | 8 km |
| Aug 11, 2007 | 4 km N of Kingston, Canada | M2.6 | 139 km | 4 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 62 km | 5 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 141 km | 5 km |
| Apr 11, 2007 | 6 km NNE of Sodus Point, New York | M2.6 | 120 km | 7 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 121 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 68 km | 5 km |
| Jan 25, 1999 | New York | M2.5 | 139 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: MOHAWK POOL (507 acres, 1994).
| Year | Name | Acres Burned | Distance |
| 1994 | MOHAWK POOL | 507 | 95 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.6 in | |
| February | 26°F (-3°C) | 2.0 in | Coldest, Driest |
| March | 32°F (-0°C) | 2.2 in | |
| April | 42°F (6°C) | 2.9 in | |
| May | 53°F (12°C) | 3.0 in | |
| June | 62°F (17°C) | 3.0 in | |
| July | 71°F (21°C) | 2.5 in | Warmest |
| August | 68°F (20°C) | 2.9 in | |
| September | 61°F (16°C) | 3.5 in | |
| October | 51°F (10°C) | 3.0 in | |
| November | 41°F (5°C) | 3.6 in | Wettest |
| December | 30°F (-1°C) | 2.9 in |
Cobourg has a seasonal temperature swing of 44°F / from 26°F in February to 71°F in July. Total annual precipitation is 34.0 inches, with November being the wettest month (3.6") and February the driest (2.0").