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Weather & Climate in Millbrook, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Millbrook 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 270 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 36.1 inches. The area receives 10.5 inches of snow annually. The city sits at an elevation of 725 feet.
Temperature
17°F Jan (-8°C)
68°F Jul (20°C)
| Annual Average | 43.6°F |
| 19% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 725 ft (221 m) |
| Area | 118.3 sq mi (306.4 km²) |
| Population Density | 14/sq mi |
| Coordinates | 44.1501°N, 78.4495°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 | 66 km | 13 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 146 km | 6 km |
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 55 km | 18 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 65 km | 18 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 82 km | 18 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 61 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 132 km | 5 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 53 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 53 km | 5 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 148 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 114 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 125 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 82 km | 8 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 81 km | 5 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 116 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 81 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 131 km | 5 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 57 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 2.5 in | Coldest |
| February | 19°F (-7°C) | 2.3 in | Driest |
| March | 29°F (-2°C) | 2.5 in | |
| April | 42°F (6°C) | 3.0 in | |
| May | 54°F (12°C) | 3.2 in | |
| June | 63°F (17°C) | 3.0 in | |
| July | 68°F (20°C) | 2.5 in | Warmest |
| August | 66°F (19°C) | 3.4 in | |
| September | 58°F (15°C) | 3.6 in | |
| October | 47°F (8°C) | 3.2 in | |
| November | 36°F (2°C) | 3.8 in | Wettest |
| December | 24°F (-4°C) | 3.1 in |
Millbrook has a seasonal temperature swing of 51°F / from 17°F in January to 68°F in July. Total annual precipitation is 36.1 inches, with November being the wettest month (3.8") and February the driest (2.3").