Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Caledonia experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 23°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 31.8 inches. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 694 feet.
Temperature
23°F Jan (-5°C)72°F Jul (22°C)
Annual Average
48.4°F
10% below US avg
January Average
23°F (-5°C)
July Average
72°F (22°C)
Sunny Days
260 days/yr
Geography
Elevation
694 ft (212 m)
Area
48.7 sq mi (126.1 km²)
Population Density
560/sq mi
Coordinates
42.7974°N, 87.8774°W
Timezone
America/Chicago
County
Racine County County
Nearest Airport
Batten International (RAC) 4 miles away
Precipitation & Snow
Annual Rainfall31.8"
16% below US avg
Wettest Month (Aug)3.94"
Driest Month (Feb)1.34"
Air Quality
AQI Median
38.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Moderate
Risk Score
85.4 / 100
Social Vulnerability
26.8 / 100
Community Resilience
98.8 / 100
Hazard Breakdown
Tornado
Relatively High
Hurricane
Very Low
Earthquake
Relatively Low
Wildfire
Very Low
Flood
Relatively Moderate
Hail
Relatively Moderate
Strong Wind
Relatively High
Heat Wave
Relatively Moderate
Winter Weather
Relatively Moderate
Lightning
Relatively High
Ice Storm
Relatively Low
Drought
Relatively Low
Cold Wave
Relatively High
Landslide
Very Low
Coastal Flood
Very 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
105 km
10 km
Nov 4, 2013
1 km SSW of Lyons, Illinois
M3.2
111 km
1 km
Jul 15, 2024
2 km WNW of Somonauk, Illinois
M3.1
145 km
10 km
Mar 25, 2015
3 km WNW of Lake in the Hills, Illinois
M2.9
79 km
6 km
Jun 10, 2013
4 km NNE of Virgil, Illinois
M2.6
104 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
322 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 17 fatalities, 684 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 27, 1984
EF4
45 km
6.5 mi
1
Apr 4, 1981
EF4
75 km
1.8 mi
3
Sep 28, 1972
EF4
58 km
5.2 mi
0
Apr 21, 1967
EF4
79 km
8.8 mi
1
Apr 11, 1965
EF4
76 km
9.1 mi
6
Aug 22, 1964
EF4
65 km
2.2 mi
0
Jan 7, 2008
EF3
46 km
10.8 mi
0
Jan 7, 2008
EF3
90 km
13.2 mi
0
Jun 5, 1980
EF3
82 km
10.7 mi
0
Jul 19, 1963
EF3
39 km
10.6 mi
0
Jul 22, 2010
EF2
27 km
1.0 mi
0
Jun 21, 2010
EF2
52 km
5.2 mi
0
Jun 1, 2000
EF2
91 km
17.0 mi
0
May 18, 1997
EF2
44 km
6.0 mi
0
Apr 19, 1996
EF2
39 km
2.0 mi
0
Sep 28, 1986
EF2
70 km
9.0 mi
0
Jun 11, 1986
EF2
97 km
8.0 mi
0
Jun 15, 1981
EF2
86 km
28.7 mi
0
Aug 4, 1980
EF2
43 km
0.1 mi
0
Jul 16, 1980
EF2
92 km
1.4 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km.
Highest wave on record: 3.0 m (10 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1954
MICHIGAN CITY, IN (LAKE MICHIGAN)
Avalanche
3.0 m
7
147 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
2 wildfires (100+ acres) recorded within 100 km.
Largest: IBSP SOUTH F1 RX (690 acres, 2024).
Year
Name
Acres Burned
Distance
2024
IBSP SOUTH F1 RX
690
44 km
2024
RX-HWY Y - SOUTH
553
73 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
23°F (-5°C)
1.7 in
Coldest
February
24°F (-5°C)
1.3 in
Driest
March
34°F (1°C)
2.3 in
April
45°F (7°C)
3.7 in
May
56°F (13°C)
3.2 in
June
66°F (19°C)
3.7 in
July
72°F (22°C)
3.7 in
Warmest
August
69°F (21°C)
3.9 in
Wettest
September
62°F (17°C)
3.7 in
October
51°F (10°C)
2.4 in
November
38°F (3°C)
2.6 in
December
25°F (-4°C)
2.1 in
Caledonia has a seasonal temperature swing of 49°F / from 23°F in January to 72°F in July. Total annual precipitation is 34.3 inches, with August being the wettest month (3.9") and February the driest (1.3").
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