Mount Dennis, ON

Full City Profile · Ontario

3.4 /5.0

B Good

13,593 Population 774/sq mi density

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

$461,770 Home Value

$1,012 Median Rent 27.7% income on rent

50°F Avg Temperature 255 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

Mount Dennis experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 30°F in January while summers reach 71°F in July. The area gets 255 sunny days per year. Annual precipitation totals 40.3 inches. The area receives 42.9 inches of snow annually.

Temperature

30°F Jan (-1°C) 71°F Jul (22°C)

Annual Average	49.6°F
	8% below US avg
January Average	30°F (-1°C)
July Average	71°F (22°C)
Sunny Days	255 days/yr

Geography

Elevation	413 ft (126 m)
Area	17.6 sq mi (45.5 km²)
Population Density	774/sq mi
Coordinates	43.6869°N, 79.4892°W
Timezone	America/Toronto

Precipitation & Snow

Annual Rainfall 40.3"

6% above US avg

Snowfall 42.9"

Wettest Month (Sep) 3.35"

Driest Month (Feb) 1.97"

Air Quality

Earthquake History

18 earthquakes (M2.5+) within 150 km since 1990. Strongest: M3.8. Most recent: M3.8 on Feb 6, 2023.

Nov 26, 1999	14 km ESE of Centennial Scarborough, Canada	M3.8	40 km
Feb 6, 2023	1 km NE of West Seneca, New York	M3.8	108 km
Dec 25, 1998	23 km SE of Cobourg, Canada	M3.6	126 km
May 24, 2000	4 km ENE of Centennial Scarborough, Canada	M3.1	34 km
May 8, 2018	14 km SSE of Ajax, Canada	M3.0	44 km
May 25, 1995	3 km NW of Amherst, New York	M3.0	94 km
Aug 4, 2004	30 km SSW of Cobourg, Canada	M3.0	99 km
Jul 19, 2007	27 km S of Cobourg, Canada	M3.0	104 km
Jun 16, 2004	11 km NNW of Angola on the Lake, New York	M2.9	109 km
Jun 5, 2009	4 km SSE of Attica, New York	M2.9	139 km
Mar 28, 2005	16 km NW of Virgil, Canada	M2.8	44 km
Mar 8, 2008	5 km ENE of Clarence Center, New York	M2.7	104 km
Dec 21, 2009	10 km NNE of Olcott, New York	M2.7	73 km
Mar 29, 2020	11 km N of Lyndonville, New York	M2.6	95 km
Sep 20, 2009	20 km ESE of Oakville, Canada	M2.6	34 km
Jul 11, 2017	11 km NNW of Barker, New York	M2.5	78 km
May 17, 2010	19 km WNW of Gravenhurst, Canada	M2.5	147 km
Feb 13, 2014	34 km N of Lyndonville, New York	M2.5	88 km

Source: USGS (M2.5+, 1990–2025)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	30°F (-1°C)	2.2 in
February	23°F (-5°C)	2.0 in	Coldest, Driest
March	32°F (-0°C)	2.1 in
April	44°F (6°C)	2.8 in
May	56°F (13°C)	3.0 in
June	65°F (18°C)	3.0 in
July	71°F (22°C)	3.0 in	Warmest
August	69°F (21°C)	3.3 in
September	62°F (16°C)	3.4 in	Wettest
October	50°F (10°C)	2.7 in
November	39°F (4°C)	3.2 in
December	28°F (-2°C)	2.6 in

Mount Dennis has a seasonal temperature swing of 48°F / from 23°F in February to 71°F in July. Total annual precipitation is 33.1 inches, with September being the wettest month (3.4") and February the driest (2.0").

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