All Countries
Weather & Climate in Thorold, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Thorold experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 32°F in January while summers reach 73°F in July. The area gets 242 sunny days per year, above the national average. Annual precipitation totals 42.4 inches. The area receives 33.5 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 584 feet.
Temperature
32°F Jan (0°C)
73°F Jul (23°C)
| Annual Average | 51.1°F |
| 5% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 242 days/yr |
Geography
| Elevation | 584 ft (178 m) |
| Area | 32.2 sq mi (83.3 km²) |
| Population Density | 741/sq mi |
| Coordinates | 43.1168°N, 79.1996°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 44 km | 6 km |
| Nov 26, 1999 | 14 km ESE of Centennial Scarborough, Canada | M3.8 | 68 km | 13 km |
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 130 km | 18 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 77 km | 18 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 100 km | 5 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 72 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 33 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 105 km | 5 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 41 km | 6 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 84 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 24 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 52 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 55 km | 8 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 98 km | 5 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 76 km | 5 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 36 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 61 km | 5 km |
| Dec 17, 1990 | 5 km SSE of Middleboro, Pennsylvania | M2.5 | 150 km | 5 km |
| Jan 25, 1999 | New York | M2.5 | 118 km | 3 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 87 km | 5 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 | 64 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 2.4 in | |
| February | 25°F (-4°C) | 2.1 in | Coldest, Driest |
| March | 33°F (1°C) | 2.4 in | |
| April | 45°F (7°C) | 3.0 in | |
| May | 56°F (13°C) | 3.3 in | |
| June | 65°F (19°C) | 3.3 in | |
| July | 73°F (23°C) | 3.2 in | Warmest |
| August | 69°F (21°C) | 3.1 in | |
| September | 62°F (17°C) | 3.7 in | Wettest |
| October | 51°F (10°C) | 3.1 in | |
| November | 40°F (5°C) | 3.5 in | |
| December | 30°F (-1°C) | 3.0 in |
Thorold has a seasonal temperature swing of 48°F / from 25°F in February to 73°F in July. Total annual precipitation is 36.0 inches, with September being the wettest month (3.7") and February the driest (2.1").