Weather & Climate in Mason, MI

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Mason experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 25°F in January while summers reach 72°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 34.3 inches. The area receives 36.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 37. 89% of days have good air quality. The city sits at an elevation of 906 feet.

Temperature

25°F Jan (-4°C) 72°F Jul (22°C)

Annual Average	49.2°F
	9% below US avg
January Average	25°F (-4°C)
July Average	72°F (22°C)
Sunny Days	260 days/yr

Geography

Elevation	906 ft (276 m)
Area	5.1 sq mi (13.3 km²)
Population Density	1,612/sq mi
Coordinates	42.5807°N, 84.4423°W
Timezone	America/Detroit
County	Ingham County County
Nearest Airport	Capital Region International (LAN) 16 miles away

Precipitation & Snow

Annual Rainfall 34.3"

10% below US avg

Snowfall 36.0"

Wettest Month (Jun) 3.50"

Driest Month (Feb) 1.38"

Air Quality

AQI Median	37.0
Rating	Good
Good Days %	89.3%
Unhealthy Days	0

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	87.3 / 100
Social Vulnerability	29.4 / 100
Community Resilience	89.5 / 100

Hazard Breakdown

Tornado	Relatively High
Hurricane	Very Low
Earthquake	Relatively Low
Wildfire	Very Low
Flood	Relatively Moderate
Hail	Relatively Moderate
Strong Wind	Very High
Heat Wave	Relatively Low
Winter Weather	Relatively Moderate
Lightning	Relatively Moderate
Ice Storm	Relatively High
Drought	No Rating
Cold Wave	Relatively High
Landslide	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

9 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

May 2, 2015	5 km S of Galesburg, Michigan	M4.2	90 km	4 km
Sep 2, 1994	5 km SSW of DeWitt, Michigan	M3.5	28 km	5 km
Apr 20, 2018	Michigan	M3.4	128 km	3 km
Jun 30, 2015	5 km NNE of Burlington, Michigan	M3.3	69 km	5 km
Jan 26, 2012	5 km NE of Topeka, Indiana	M3.0	141 km	5 km
May 20, 2023	3 km SSE of Walbridge, Ohio	M2.6	139 km	6 km
Mar 18, 2024	4 km WSW of Millbury, Ohio	M2.5	140 km	6 km
Sep 7, 2012	17 km ESE of Stony Point, Michigan	M2.5	138 km	5 km
Mar 8, 2010	7 km ENE of Grosse Ile, Michigan	M2.5	122 km	18 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

458 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 160 fatalities, 1,798 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 8, 1953	EF5	75 km	18.9 mi	116
Apr 2, 1977	EF4	97 km	12.4 mi	0
Apr 2, 1977	EF4	50 km	16.6 mi	1
Mar 20, 1976	EF4	84 km	3.8 mi	1
Apr 21, 1967	EF4	49 km	12.0 mi	0
Apr 11, 1965	EF4	98 km	80.5 mi	21
Apr 11, 1965	EF4	34 km	21.0 mi	1
Jul 4, 1957	EF4	59 km	29.9 mi	0
May 12, 1956	EF4	78 km	6.6 mi	3
Mar 15, 2012	EF3	45 km	7.6 mi	0
Aug 24, 2007	EF3	32 km	6.5 mi	0
Jul 2, 1997	EF3	95 km	1.7 mi	1
Jul 2, 1997	EF3	88 km	2.0 mi	0
Mar 27, 1991	EF3	44 km	2.0 mi	0
Mar 27, 1991	EF3	97 km	5.0 mi	0
Sep 14, 1990	EF3	81 km	24.0 mi	0
May 15, 1986	EF3	84 km	1.2 mi	0
Aug 8, 1984	EF3	76 km	0.8 mi	0
Jun 15, 1982	EF3	26 km	13.0 mi	1
Jul 14, 1974	EF3	90 km	1.0 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	25°F (-4°C)	1.5 in
February	24°F (-4°C)	1.4 in	Coldest, Driest
March	34°F (1°C)	2.4 in
April	46°F (8°C)	3.0 in
May	58°F (14°C)	2.9 in
June	67°F (19°C)	3.5 in	Wettest
July	72°F (22°C)	2.8 in	Warmest
August	69°F (20°C)	3.3 in
September	61°F (16°C)	3.4 in
October	50°F (10°C)	2.2 in
November	38°F (4°C)	2.7 in
December	27°F (-3°C)	2.2 in

Mason has a seasonal temperature swing of 48°F / from 24°F in February to 72°F in July. Total annual precipitation is 31.3 inches, with June being the wettest month (3.5") and February the driest (1.4").

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