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Weather & Climate in Adjala-Tosorontio, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Adjala-Tosorontio has a cool climate with an average annual temperature of 43°F (6°C). Winters average 18°F in January while summers reach 68°F in July. The area gets 277 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 32.8 inches. The area receives 8.6 inches of snow annually. The city sits at an elevation of 873 feet.
Temperature
18°F Jan (-8°C)
68°F Jul (20°C)
| Annual Average | 43.4°F |
| 20% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 277 days/yr |
Geography
| Elevation | 873 ft (266 m) |
| Area | 143.5 sq mi (371.5 km²) |
| Population Density | 77/sq mi |
| Coordinates | 44.1375°N, 79.9421°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
13 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 | 89 km | 13 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 | 91 km | 5 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 144 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 148 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 105 km | 7 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 130 km | 8 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 150 km | 5 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 93 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 134 km | 5 km |
| Jul 29, 2012 | 17 km SSW of Parry Sound, Canada | M2.5 | 118 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 102 km | 5 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 136 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1855 | OWEN SOUND, LAKE HURON | Unknown | 2.7 m | — | 127 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 2.3 in | Coldest |
| February | 18°F (-8°C) | 2.0 in | Driest |
| March | 27°F (-3°C) | 2.0 in | |
| April | 40°F (5°C) | 2.6 in | |
| May | 53°F (11°C) | 3.1 in | |
| June | 62°F (17°C) | 3.1 in | |
| July | 68°F (20°C) | 3.0 in | Warmest |
| August | 66°F (19°C) | 3.2 in | Wettest |
| September | 59°F (15°C) | 3.2 in | |
| October | 48°F (9°C) | 2.8 in | |
| November | 37°F (3°C) | 3.2 in | |
| December | 25°F (-4°C) | 2.4 in |
Adjala-Tosorontio has a seasonal temperature swing of 50°F / from 18°F in January to 68°F in July. Total annual precipitation is 32.8 inches, with August being the wettest month (3.2") and February the driest (2.0").