Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Union City experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 24°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 31.5 inches. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 874 feet.
Temperature
24°F Jan (-4°C)73°F Jul (23°C)
Annual Average
49.3°F
9% below US avg
January Average
24°F (-4°C)
July Average
73°F (23°C)
Sunny Days
260 days/yr
Geography
Elevation
874 ft (266 m)
Area
1.5 sq mi (3.8 km²)
Population Density
1,251/sq mi
Coordinates
42.0667°N, 85.1432°W
Timezone
America/Detroit
County
Calhoun County County
Nearest Airport
Kalamazoo/Battle Creek International (AZO) 24 miles away
Precipitation & Snow
Annual Rainfall31.5"
17% below US avg
Wettest Month (May)3.66"
Driest Month (Feb)1.57"
Air Quality
AQI Median
38.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
74.5 / 100
Social Vulnerability
35.6 / 100
Community Resilience
93.6 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Very Low
Earthquake
Relatively 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 Moderate
Landslide
Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
6 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
30 km
4 km
Sep 2, 1994
5 km SSW of DeWitt, Michigan
M3.5
93 km
5 km
Jun 30, 2015
5 km NNE of Burlington, Michigan
M3.3
12 km
5 km
Jan 26, 2012
5 km NE of Topeka, Indiana
M3.0
62 km
5 km
Jun 12, 2015
6 km NW of Convoy, Ohio
M2.6
128 km
5 km
May 20, 2023
3 km SSE of Walbridge, Ohio
M2.6
149 km
6 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
401 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 104 fatalities, 1,428 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 2, 1977
EF4
42 km
16.6 mi
1
Apr 2, 1977
EF4
41 km
12.4 mi
0
Apr 21, 1967
EF4
100 km
12.0 mi
0
Apr 11, 1965
EF4
68 km
21.6 mi
5
Apr 11, 1965
EF4
38 km
90.3 mi
23
Apr 11, 1965
EF4
96 km
21.0 mi
1
Apr 11, 1965
EF4
98 km
21.2 mi
31
Apr 11, 1965
EF4
32 km
80.5 mi
21
Aug 24, 2007
EF3
64 km
6.5 mi
0
Mar 27, 1991
EF3
60 km
21.0 mi
1
Mar 27, 1991
EF3
40 km
2.0 mi
0
Mar 27, 1991
EF3
59 km
5.0 mi
0
May 15, 1986
EF3
21 km
1.2 mi
0
Jun 15, 1982
EF3
71 km
13.0 mi
1
May 13, 1980
EF3
90 km
21.0 mi
0
May 13, 1980
EF3
54 km
10.6 mi
5
Apr 3, 1974
EF3
77 km
36.2 mi
5
Apr 11, 1965
EF3
51 km
14.2 mi
0
Apr 11, 1965
EF3
66 km
14.1 mi
0
Aug 22, 1964
EF3
81 km
0.1 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
93 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
24°F (-4°C)
1.7 in
Coldest
February
25°F (-4°C)
1.6 in
Driest
March
35°F (2°C)
2.5 in
April
47°F (8°C)
3.3 in
May
59°F (15°C)
3.7 in
Wettest
June
68°F (20°C)
3.7 in
July
73°F (23°C)
3.7 in
Warmest
August
69°F (21°C)
3.6 in
September
62°F (17°C)
3.6 in
October
51°F (10°C)
2.8 in
November
39°F (4°C)
2.8 in
December
28°F (-2°C)
2.6 in
Union City has a seasonal temperature swing of 48°F / from 24°F in January to 73°F in July. Total annual precipitation is 35.4 inches, with May being the wettest month (3.7") and February the driest (1.6").
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