Weather & Climate in Mason, WI

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

Mason has a cool climate with an average annual temperature of 41°F (5°C). Winters average 11°F in January while summers reach 66°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 34.7 inches. The area receives 74.2 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 952 feet.

Temperature

11°F Jan (-12°C) 66°F Jul (19°C)

Annual Average	40.6°F
	25% below US avg
January Average	11°F (-12°C)
July Average	66°F (19°C)
Sunny Days	249 days/yr

Geography

Elevation	952 ft (290 m)
Area	0.8 sq mi (2.0 km²)
Population Density	116/sq mi
Coordinates	46.4363°N, 91.0598°W
Timezone	America/Chicago
County	Bayfield County County
Nearest Airport	Duluth International (DLH) 61 miles away

Precipitation & Snow

Annual Rainfall 34.7"

9% below US avg

Snowfall 74.2"

Wettest Month (Aug) 4.09"

Driest Month (Feb) 0.79"

Air Quality

AQI Median	38.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	35.1 / 100
Social Vulnerability	65.4 / 100
Community Resilience	76.7 / 100

Hazard Breakdown

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

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

Tornado History

65 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 2 fatalities, 50 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 8, 1985	EF3	72 km	68.0 mi	2
Jul 7, 1970	EF3	86 km	37.9 mi	0
Jul 1, 2011	EF2	64 km	2.9 mi	0
Jul 27, 2010	EF2	40 km	0.9 mi	0
Sep 3, 1980	EF2	65 km	9.9 mi	0
Sep 20, 1972	EF2	97 km	13.1 mi	0
Jun 30, 1968	EF2	59 km	39.0 mi	0
Aug 14, 1961	EF2	64 km	4.5 mi	0
Jul 14, 1958	EF2	82 km	1.5 mi	0
Jun 4, 1958	EF2	95 km	13.8 mi	0
Jul 18, 2020	EF1	50 km	0.4 mi	0
Jul 18, 2020	EF1	11 km	0.6 mi	0
Jul 18, 2019	EF1	44 km	1.3 mi	0
Jul 11, 2016	EF1	70 km	2.3 mi	0
Jul 11, 2016	EF1	76 km	2.4 mi	0
May 22, 2011	EF1	80 km	3.3 mi	0
Jul 27, 2010	EF1	76 km	4.8 mi	0
Jun 27, 1994	EF1	90 km	1.0 mi	0
Jun 27, 1994	EF1	76 km	4.0 mi	0
Aug 9, 1992	EF1	59 km	0.5 mi	0

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

Wildfire History

19 wildfires (100+ acres) recorded within 100 km. Largest: GERMANN ROAD FIRE (6,751 acres, 2013).

Year	Name	Acres Burned	Distance
2013	GERMANN ROAD FIRE	6,751	44 km
2019	NW SANDS UNITS I/F/C/A	3,386	27 km
2016	UNNAMED	2,682	28 km
2013	UNNAMED	2,240	28 km
2014	UNNAMED	2,116	24 km
2015	UNNAMED	1,407	25 km
2015	UNNAMED	1,361	28 km
2021	NW SANDS - BLOCK E RX	1,361	25 km
2019	RILEY	1,254	96 km
2007	PIONEER FIRE	1,072	23 km
2018	UNNAMED	961	26 km
2024	NW SANDS BLOCK J RX	911	30 km
2024	NW SANDS BLOCK B RX	844	25 km
2018	NW SANDS BLOCK C	771	23 km
1987	FOULDS CREEK	750	100 km
2022	BRINKS 8C - SOUTH RX	725	28 km
2022	UNNAMED	702	97 km
2007	BN COMPLEX 2	547	89 km
2022	LDF MARSH BURN 2022	503	98 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	11°F (-12°C)	1.2 in	Coldest
February	15°F (-9°C)	0.8 in	Driest
March	26°F (-3°C)	1.8 in
April	40°F (4°C)	2.2 in
May	53°F (11°C)	3.1 in
June	61°F (16°C)	3.7 in
July	66°F (19°C)	4.0 in	Warmest
August	65°F (18°C)	4.1 in	Wettest
September	57°F (14°C)	3.9 in
October	45°F (7°C)	2.7 in
November	30°F (-1°C)	2.1 in
December	16°F (-9°C)	1.3 in

Mason has a seasonal temperature swing of 55°F / from 11°F in January to 66°F in July. Total annual precipitation is 30.8 inches, with August being the wettest month (4.1") and February the driest (0.8").

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