Temperature, precipitation, air quality, natural hazards, and monthly weather data.
South Haven experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 28°F in January while summers reach 73°F in July. Annual precipitation totals 37.2 inches. The area receives 109.0 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 46. 63% of days have good air quality. The city sits at an elevation of 620 feet.
Temperature
28°F Jan (-2°C)73°F Jul (23°C)
Annual Average
50.8°F
6% below US avg
January Average
28°F (-2°C)
July Average
73°F (23°C)
Geography
Elevation
620 ft (189 m)
Area
3.5 sq mi (9.1 km²)
Population Density
1,154/sq mi
Coordinates
42.4013°N, 86.2684°W
Timezone
America/Detroit
County
Allegan County County
Nearest Airport
Southwest Michigan Regional (BEH) 20 miles away
Precipitation & Snow
Annual Rainfall37.2"
2% below US avg
Snowfall109.0"
Wettest Month (May)3.91"
Driest Month (Feb)2.04"
Air Quality
AQI Median
46.0
Rating
Good
Good Days %
63.2%
Unhealthy Days
4
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
68.5 / 100
Social Vulnerability
22.4 / 100
Community Resilience
98.4 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Very Low
Earthquake
Very Low
Wildfire
Very Low
Flood
Relatively Moderate
Hail
Relatively Moderate
Strong Wind
Relatively High
Heat Wave
Relatively Low
Winter Weather
Relatively Moderate
Lightning
Relatively Low
Ice Storm
Relatively Moderate
Drought
No Rating
Cold Wave
Relatively Low
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: M4.2.
May 2, 2015
5 km S of Galesburg, Michigan
M4.2
72 km
4 km
Sep 2, 1994
5 km SSW of DeWitt, Michigan
M3.5
143 km
5 km
Jun 30, 2015
5 km NNE of Burlington, Michigan
M3.3
105 km
5 km
Nov 4, 2013
1 km SSW of Lyons, Illinois
M3.2
145 km
1 km
Jan 26, 2012
5 km NE of Topeka, Indiana
M3.0
112 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
271 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF5. Total: 102 fatalities, 1,383 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 3, 1956
EF5
28 km
58.8 mi
17
Apr 2, 1977
EF4
61 km
12.4 mi
0
Apr 11, 1965
EF4
99 km
21.2 mi
31
Apr 11, 1965
EF4
99 km
21.6 mi
5
Apr 11, 1965
EF4
92 km
37.0 mi
36
Apr 11, 1965
EF4
74 km
20.6 mi
5
Oct 24, 2001
EF3
88 km
47.0 mi
1
May 13, 1980
EF3
21 km
21.0 mi
0
May 13, 1980
EF3
47 km
10.6 mi
5
Mar 12, 1976
EF3
97 km
12.6 mi
0
Apr 21, 1967
EF3
69 km
13.6 mi
0
Nov 26, 1965
EF3
80 km
1.0 mi
0
Apr 11, 1965
EF3
84 km
14.1 mi
0
Apr 11, 1965
EF3
55 km
14.2 mi
0
Apr 30, 1962
EF3
84 km
36.5 mi
0
Apr 3, 1956
EF3
19 km
60.6 mi
0
Aug 6, 2024
EF2
59 km
8.5 mi
0
May 7, 2024
EF2
82 km
19.5 mi
0
May 7, 2024
EF2
55 km
10.9 mi
0
Jun 5, 2010
EF2
81 km
10.7 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
93 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
1 wildfire (100+ acres) recorded within 100 km.
Largest: ALLEGAN6 (1,077 acres, 1988).
Year
Name
Acres Burned
Distance
1988
ALLEGAN6
1,077
27 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
28°F (-2°C)
2.7 in
Coldest
February
30°F (-1°C)
2.0 in
Driest
March
37°F (3°C)
2.3 in
April
48°F (9°C)
3.6 in
May
59°F (15°C)
3.9 in
Wettest
June
68°F (20°C)
3.7 in
July
73°F (23°C)
3.2 in
Warmest
August
72°F (22°C)
3.7 in
September
66°F (19°C)
3.2 in
October
55°F (13°C)
3.9 in
November
43°F (6°C)
2.7 in
December
33°F (1°C)
2.4 in
South Haven has a seasonal temperature swing of 45°F / from 28°F in January to 73°F in July. Total annual precipitation is 37.2 inches, with May being the wettest month (3.9") and February the driest (2.0").