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Weather & Climate in Otonabee-South Monaghan, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Otonabee-South Monaghan has a cool climate with an average annual temperature of 44°F (6°C). Winters average 17°F in January while summers reach 68°F in July. The area gets 272 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 35.2 inches. The area receives 10.0 inches of snow annually. The city sits at an elevation of 725 feet.
Temperature
17°F Jan (-9°C)
68°F Jul (20°C)
| Annual Average | 43.5°F |
| 19% below US avg | |
| January Average | 17°F (-9°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 272 days/yr |
Geography
| Elevation | 725 ft (221 m) |
| Area | 133.7 sq mi (346.2 km²) |
| Population Density | 53/sq mi |
| Coordinates | 44.2433°N, 78.2151°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
18 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 | 86 km | 13 km |
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 51 km | 18 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 86 km | 18 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 66 km | 18 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 82 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 147 km | 5 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 61 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 59 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 134 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 138 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 98 km | 8 km |
| Aug 11, 2007 | 4 km N of Kingston, Canada | M2.6 | 138 km | 4 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 92 km | 5 km |
| Apr 11, 2007 | 6 km NNE of Sodus Point, New York | M2.6 | 143 km | 7 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 137 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 95 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 137 km | 5 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 69 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-9°C) | 2.7 in | Coldest |
| February | 19°F (-7°C) | 2.1 in | Driest |
| March | 29°F (-2°C) | 2.3 in | |
| April | 42°F (6°C) | 2.8 in | |
| May | 54°F (12°C) | 3.2 in | |
| June | 63°F (17°C) | 3.2 in | |
| July | 68°F (20°C) | 2.7 in | Warmest |
| August | 66°F (19°C) | 3.2 in | |
| September | 58°F (15°C) | 3.5 in | |
| October | 47°F (8°C) | 3.1 in | |
| November | 36°F (2°C) | 3.6 in | Wettest |
| December | 23°F (-5°C) | 2.9 in |
Otonabee-South Monaghan has a seasonal temperature swing of 52°F / from 17°F in January to 68°F in July. Total annual precipitation is 35.2 inches, with November being the wettest month (3.6") and February the driest (2.1").