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Weather & Climate in Ashton, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ashton has a cool climate with an average annual temperature of 42°F (6°C). Winters average 13°F in January while summers reach 68°F in July. The area gets 273 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 34.6 inches. The area receives 12.6 inches of snow annually. The city sits at an elevation of 479 feet.
Temperature
13°F Jan (-11°C)
68°F Jul (20°C)
| Annual Average | 42.1°F |
| 22% below US avg | |
| January Average | 13°F (-11°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 479 ft (146 m) |
| Area | 3.8 sq mi (9.9 km²) |
| Population Density | 52/sq mi |
| Coordinates | 45.1501°N, 76.0327°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
135 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Jun 23, 2010 | 29 km NNE of Val-des-Monts, Canada | M5.4 | 92 km | 19 km |
| May 17, 2013 | 20 km NNE of Shawville, Canada | M5.1 | 72 km | 13 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 133 km | 18 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 94 km | 18 km |
| Nov 17, 1992 | 16 km ENE of Saint-André-Avellin, Canada | M4.0 | 114 km | 18 km |
| Aug 6, 2000 | 7 km SSW of La Minerve, Canada | M4.0 | 142 km | 18 km |
| Feb 25, 2006 | 4 km NE of Thurso, Canada | M4.0 | 84 km | 11 km |
| Mar 6, 1991 | 49 km NNW of Fort-Coulonge, Canada | M3.9 | 142 km | 18 km |
| Oct 7, 1990 | 21 km WNW of La Minerve, Canada | M3.9 | 146 km | 18 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 128 km | 10 km |
| Sep 18, 2011 | 1 km E of Thurso, Canada | M3.8 | 80 km | 5 km |
| Nov 6, 2012 | Ontario-Quebec border region, Canada | M3.7 | 123 km | 11 km |
| Feb 26, 1998 | 33 km SW of Saint-Raphaël, Canada | M3.7 | 105 km | 18 km |
| Apr 8, 2003 | 17 km ESE of Saint Regis Falls, New York | M3.7 | 146 km | 10 km |
| Sep 12, 1995 | 8 km S of Brownsburg-Chatham, Canada | M3.7 | 135 km | 18 km |
| May 17, 2013 | 20 km NNE of Shawville, Canada | M3.6 | 72 km | 11 km |
| Apr 23, 2023 | New York | M3.6 | 143 km | 9 km |
| Oct 20, 2013 | 34 km SSW of Petawawa, Canada | M3.6 | 122 km | 18 km |
| Nov 2, 2009 | 5 km S of Lac-Simon, Canada | M3.6 | 146 km | 4 km |
| May 14, 2016 | 8 km NW of Petawawa, Canada | M3.5 | 136 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 15.0 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1908 | NOTRE DAME DE LA SALETTE | Meteorological | 15.0 m | 33 | 77 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 13°F (-11°C) | 2.5 in | Coldest |
| February | 15°F (-9°C) | 2.0 in | Driest |
| March | 26°F (-3°C) | 2.2 in | |
| April | 40°F (5°C) | 2.6 in | |
| May | 54°F (12°C) | 3.0 in | |
| June | 63°F (17°C) | 3.4 in | |
| July | 68°F (20°C) | 3.5 in | Warmest |
| August | 67°F (19°C) | 3.1 in | |
| September | 58°F (14°C) | 3.5 in | Wettest |
| October | 46°F (8°C) | 3.0 in | |
| November | 35°F (2°C) | 3.3 in | |
| December | 20°F (-6°C) | 2.7 in |
Ashton has a seasonal temperature swing of 56°F / from 13°F in January to 68°F in July. Total annual precipitation is 34.6 inches, with September being the wettest month (3.5") and February the driest (2.0").