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Weather & Climate in Gratiot, WI

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

Gratiot experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 18°F in January while summers reach 71°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 37.6 inches. The area receives 35.7 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 807 feet.

Temperature

18°F Jan (-8°C) 71°F Jul (22°C)
Annual Average46.2°F
14% below US avg
January Average18°F (-8°C)
July Average71°F (22°C)
Sunny Days260 days/yr

Geography

Elevation807 ft (246 m)
Area0.5 sq mi (1.4 km²)
Population Density391/sq mi
Coordinates42.5798°N, 90.0238°W
TimezoneAmerica/Chicago
CountyLafayette County County
Nearest AirportDubuque Regional (DBQ)
37 miles away

Precipitation & Snow

Annual Rainfall 37.6"
1% below US avg
Snowfall 35.7"
Wettest Month (Jun) 4.33"
Driest Month (Jan) 1.14"

Air Quality

AQI Median38.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score33.1 / 100
Social Vulnerability24.1 / 100
Community Resilience58.1 / 100

Hazard Breakdown

Tornado Relatively Low
Hurricane Very Low
Earthquake Very Low
Wildfire Very Low
Flood Very Low
Hail Relatively Moderate
Strong Wind Relatively Low
Heat Wave Very Low
Winter Weather Very Low
Lightning Very Low
Ice Storm Relatively Low
Drought Relatively Low
Cold Wave Relatively Moderate
Landslide Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.

Feb 10, 2010 2 km NW of Lily Lake, Illinois M3.8 143 km 10 km
Sep 2, 1999 8 km W of Amboy, Illinois M3.5 107 km 5 km
Jul 15, 2024 2 km WNW of Somonauk, Illinois M3.1 150 km 10 km
Mar 25, 2015 3 km WNW of Lake in the Hills, Illinois M2.9 143 km 6 km
Jun 10, 2013 4 km NNE of Virgil, Illinois M2.6 141 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

510 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 41 fatalities, 951 injuries.

Date Rating Distance Path Fatalities
Jun 7, 1984 EF5 44 km 36.0 mi 9
Jul 3, 1983 EF4 44 km 0.5 mi 0
Apr 21, 1967 EF4 99 km 25.5 mi 24
Aug 7, 2021 EF3 84 km 9.4 mi 0
Jun 16, 2014 EF3 60 km 1.0 mi 0
Aug 18, 2005 EF3 62 km 18.6 mi 1
Jun 19, 1993 EF3 64 km 14.0 mi 0
Jun 17, 1992 EF3 52 km 16.0 mi 0
May 8, 1988 EF3 17 km 16.0 mi 0
Aug 5, 1979 EF3 72 km 5.7 mi 0
Jun 4, 1975 EF3 97 km 2.3 mi 0
Jun 20, 1974 EF3 70 km 10.6 mi 1
Sep 9, 1970 EF3 54 km 4.7 mi 0
Aug 2, 1967 EF3 77 km 0.1 mi 2
Apr 16, 1967 EF3 10 km 27.8 mi 0
Jan 24, 1967 EF3 54 km 24.9 mi 0
Jan 24, 1967 EF3 59 km 7.4 mi 0
Sep 3, 1964 EF3 85 km 17.1 mi 0
Aug 16, 1963 EF3 84 km 9.6 mi 0
Aug 16, 1963 EF3 84 km 9.6 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

3 wildfires (100+ acres) recorded within 100 km. Largest: 2018 BADGER RX BURNS (659 acres, 2018).

Year Name Acres Burned Distance
2018 2018 BADGER RX BURNS 659 91 km
2019 2019 BADGER RX BURNS 627 91 km
2009 COLD SPRINGS 552 34 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 18°F (-8°C) 1.1 in Coldest, Driest
February 22°F (-6°C) 1.2 in
March 34°F (1°C) 2.3 in
April 47°F (8°C) 3.4 in
May 59°F (15°C) 3.6 in
June 68°F (20°C) 4.3 in Wettest
July 71°F (22°C) 3.9 in Warmest
August 69°F (21°C) 4.2 in
September 61°F (16°C) 3.9 in
October 50°F (10°C) 2.5 in
November 36°F (2°C) 2.4 in
December 23°F (-5°C) 1.7 in

Gratiot has a seasonal temperature swing of 53°F / from 18°F in January to 71°F in July. Total annual precipitation is 34.4 inches, with June being the wettest month (4.3") and January the driest (1.1").

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