Dorchester, ON

Full City Profile · Ontario

3.4 /5.0

B Good

9,329 Population 35/sq mi density

$82,573 Median Income $47,716 per capita

$461,770 Home Value

$1,012 Median Rent 27.7% income on rent

49°F Avg Temperature 235 sunny days/yr

Overall

3.4 / 5.0

Good overall score based on economy, affordability, safety and education

B+

Economy

3.8 / 5.0

$82,573 median income, 5.1% unemployment

B+

Affordability

3.5 / 5.0

$461,770 home value, $1,012/mo rent

C+

Safety

2.5 / 5.0

B+

Education

3.6 / 5.0

32.9% bachelor's degree or higher

Dorchester experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 31°F in January while summers reach 70°F in July. The area gets 235 sunny days per year. Annual precipitation totals 38.7 inches. The area receives 34.0 inches of snow annually.

Temperature

31°F Jan (-1°C) 70°F Jul (21°C)

Annual Average	49.4°F
	9% below US avg
January Average	31°F (-1°C)
July Average	70°F (21°C)
Sunny Days	235 days/yr

Geography

Elevation	856 ft (261 m)
Area	270.4 sq mi (700.4 km²)
Population Density	35/sq mi
Coordinates	42.9834°N, 81.0664°W
Timezone	America/Toronto

Precipitation & Snow

Annual Rainfall 38.7"

2% above US avg

Snowfall 34.0"

Wettest Month (Nov) 3.86"

Driest Month (Feb) 2.36"

Air Quality

Earthquake History

35 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.0. Most recent: M2.5 on May 12, 2025.

Jun 10, 2019	1 km NW of Timberlake, Ohio	M4.0	149 km
Jan 26, 2001	8 km NNW of Edgewood, Ohio	M3.9	118 km
Oct 16, 1993	8 km SSE of Madison, Ohio	M3.6	143 km
Jun 30, 2003	6 km NW of Perry, Ohio	M3.6	132 km
Aug 28, 2023	7 km SE of Madison, Ohio	M3.6	139 km
Jun 20, 2006	9 km WNW of North Perry, Ohio	M3.5	128 km
Mar 15, 1992	15 km NW of North Perry, Ohio	M3.5	120 km
Jun 3, 2001	3 km N of Edgewood, Ohio	M3.4	122 km
Jun 30, 2004	2 km WNW of Madison, Ohio	M3.3	134 km
Jul 1, 2013	5 km NNW of Fairport Harbor, Ohio	M3.2	134 km
Jan 9, 2008	6 km WNW of Mentor-on-the-Lake, Ohio	M3.1	144 km
Mar 11, 2006	8 km NNW of Mentor-on-the-Lake, Ohio	M3.1	136 km
Apr 25, 2010	2 km WNW of Madison, Ohio	M3.0	134 km
Feb 23, 2011	18 km NE of Leamington, Canada	M3.0	145 km
Feb 23, 1995	3 km W of Ashtabula, Ohio	M2.9	125 km
Jan 4, 2022	3 km NW of Timberlake, Ohio	M2.8	148 km
Sep 22, 1999	16 km NW of Mentor-on-the-Lake, Ohio	M2.8	133 km
Mar 28, 2005	16 km NW of Virgil, Canada	M2.8	149 km
Apr 28, 2002	Ohio	M2.7	129 km
Mar 8, 2013	5 km NNW of Timberlake, Ohio	M2.7	145 km

Source: USGS (M2.5+, 1990-2025)

Tsunami History

2 tsunamis recorded within 500 km. Highest wave on record: 2.7 m (9 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1823	LAKE ERIE	Unknown	2.7 m	-	77 km
1952	LAKE HURON, MI	Avalanche	1.5 m	-	109 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	31°F (-1°C)	2.8 in
February	22°F (-5°C)	2.4 in	Coldest, Driest
March	32°F (-0°C)	2.9 in
April	44°F (6°C)	3.3 in
May	56°F (13°C)	3.4 in
June	65°F (18°C)	3.5 in
July	70°F (21°C)	3.4 in	Warmest
August	68°F (20°C)	3.4 in
September	61°F (16°C)	3.8 in
October	49°F (10°C)	3.3 in
November	39°F (4°C)	3.9 in	Wettest
December	27°F (-3°C)	3.5 in

Dorchester has a seasonal temperature swing of 47°F / from 22°F in February to 70°F in July. Total annual precipitation is 39.4 inches, with November being the wettest month (3.9") and February the driest (2.4").

View full weather details →