Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Delton experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 25°F in January while summers reach 73°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 39.5 inches. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 925 feet.
Temperature
25°F Jan (-4°C)73°F Jul (23°C)
Annual Average
50.4°F
7% below US avg
January Average
25°F (-4°C)
July Average
73°F (23°C)
Sunny Days
260 days/yr
Geography
Elevation
925 ft (282 m)
Area
2.2 sq mi (5.8 km²)
Population Density
390/sq mi
Coordinates
42.4946°N, 85.4132°W
Timezone
America/Detroit
County
Barry County County
Nearest Airport
Kalamazoo/Battle Creek International (AZO) 19 miles away
Precipitation & Snow
Annual Rainfall39.5"
4% above US avg
Wettest Month (Sep)3.94"
Driest Month (Feb)1.54"
Air Quality
AQI Median
38.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
46.0 / 100
Social Vulnerability
20.8 / 100
Community Resilience
90.9 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Very Low
Earthquake
Very Low
Wildfire
Very Low
Flood
Relatively Low
Hail
Relatively Low
Strong Wind
Relatively Moderate
Heat Wave
Very Low
Winter Weather
Relatively Low
Lightning
Relatively Low
Ice Storm
Relatively Moderate
Drought
No Rating
Cold Wave
Relatively Low
Landslide
Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
4 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
29 km
4 km
Sep 2, 1994
5 km SSW of DeWitt, Michigan
M3.5
74 km
5 km
Jun 30, 2015
5 km NNE of Burlington, Michigan
M3.3
49 km
5 km
Jan 26, 2012
5 km NE of Topeka, Indiana
M3.0
102 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
353 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF5. Total: 84 fatalities, 1,466 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 3, 1956
EF5
68 km
58.8 mi
17
Apr 2, 1977
EF4
26 km
12.4 mi
0
Apr 2, 1977
EF4
33 km
16.6 mi
1
Apr 21, 1967
EF4
70 km
12.0 mi
0
Apr 11, 1965
EF4
87 km
90.3 mi
23
Apr 11, 1965
EF4
72 km
20.6 mi
5
Apr 11, 1965
EF4
84 km
80.5 mi
21
Apr 11, 1965
EF4
74 km
21.0 mi
1
Aug 24, 2007
EF3
49 km
6.5 mi
0
Mar 27, 1991
EF3
44 km
2.0 mi
0
May 15, 1986
EF3
73 km
1.2 mi
0
Jun 15, 1982
EF3
87 km
13.0 mi
1
May 13, 1980
EF3
33 km
10.6 mi
5
May 13, 1980
EF3
73 km
21.0 mi
0
Apr 21, 1967
EF3
54 km
13.6 mi
0
Apr 11, 1965
EF3
21 km
14.2 mi
0
Apr 11, 1965
EF3
20 km
14.1 mi
0
Apr 3, 1956
EF3
64 km
60.6 mi
0
Aug 6, 2024
EF2
59 km
8.5 mi
0
May 7, 2024
EF2
40 km
10.9 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
150 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
52 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
25°F (-4°C)
1.9 in
February
25°F (-4°C)
1.5 in
Coldest, Driest
March
35°F (2°C)
2.4 in
April
47°F (8°C)
3.4 in
May
58°F (15°C)
3.4 in
June
67°F (20°C)
3.7 in
July
73°F (23°C)
3.5 in
Warmest
August
70°F (21°C)
3.6 in
September
62°F (17°C)
3.9 in
Wettest
October
51°F (10°C)
2.8 in
November
39°F (4°C)
3.0 in
December
28°F (-2°C)
2.7 in
Delton has a seasonal temperature swing of 48°F / from 25°F in February to 73°F in July. Total annual precipitation is 35.8 inches, with September being the wettest month (3.9") and February the driest (1.5").
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