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. 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) |
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").