Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Osceola experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 24°F in January while summers reach 72°F in July. Annual precipitation totals 40.2 inches. The area receives 36.9 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 45. 65% of days have good air quality. The city sits at an elevation of 735 feet.
Temperature
24°F Jan (-4°C)72°F Jul (22°C)
Annual Average
49.3°F
9% below US avg
January Average
24°F (-4°C)
July Average
72°F (22°C)
Geography
Elevation
735 ft (224 m)
Area
1.4 sq mi (3.5 km²)
Population Density
1,913/sq mi
Coordinates
41.6657°N, 86.0787°W
Timezone
America/Indiana/Indianapolis
County
St. Joseph County County
Nearest Airport
South Bend International (SBN) 13 miles away
Precipitation & Snow
Annual Rainfall40.2"
6% above US avg
Snowfall36.9"
Wettest Month (Jun)4.31"
Driest Month (Feb)2.34"
Air Quality
AQI Median
45.0
Rating
Good
Good Days %
64.8%
Unhealthy Days
2
Natural Hazard Risk
Overall Risk
Relatively Moderate
Risk Score
85.8 / 100
Social Vulnerability
37.2 / 100
Community Resilience
90.0 / 100
Hazard Breakdown
Tornado
Relatively High
Hurricane
Very Low
Earthquake
Relatively Low
Wildfire
Very Low
Flood
Relatively Moderate
Hail
Relatively High
Strong Wind
Relatively High
Heat Wave
Relatively Moderate
Winter Weather
Relatively Moderate
Lightning
Relatively Moderate
Ice Storm
Relatively Moderate
Drought
Very Low
Cold Wave
Relatively High
Landslide
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
83 km
4 km
Jun 30, 2015
5 km NNE of Burlington, Michigan
M3.3
101 km
5 km
Nov 4, 2013
1 km SSW of Lyons, Illinois
M3.2
146 km
1 km
Jan 26, 2012
5 km NE of Topeka, Indiana
M3.0
50 km
5 km
Jun 12, 2015
6 km NW of Convoy, Ohio
M2.6
135 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
424 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 141 fatalities, 1,772 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 2, 1977
EF4
81 km
12.4 mi
0
Apr 11, 1965
EF4
91 km
80.5 mi
21
Apr 11, 1965
EF4
16 km
21.2 mi
31
Apr 11, 1965
EF4
14 km
37.0 mi
36
Apr 11, 1965
EF4
76 km
90.3 mi
23
Apr 11, 1965
EF4
32 km
21.6 mi
5
May 27, 2019
EF3
76 km
13.7 mi
0
Oct 18, 2007
EF3
41 km
20.3 mi
0
Oct 24, 2001
EF3
30 km
47.0 mi
1
Mar 27, 1991
EF3
85 km
21.0 mi
1
May 15, 1986
EF3
97 km
1.2 mi
0
May 13, 1980
EF3
63 km
21.0 mi
0
May 13, 1980
EF3
77 km
10.6 mi
5
Mar 12, 1976
EF3
74 km
12.6 mi
0
Mar 12, 1976
EF3
64 km
12.1 mi
0
Apr 3, 1974
EF3
58 km
36.2 mi
5
Oct 24, 1967
EF3
96 km
0.1 mi
0
Nov 26, 1965
EF3
35 km
1.0 mi
0
Apr 11, 1965
EF3
55 km
35.6 mi
10
Apr 11, 1965
EF3
100 km
33.1 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
67 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
3 wildfires (100+ acres) recorded within 100 km.
Largest: OGDEN DUNS (863 acres, 1986).
Year
Name
Acres Burned
Distance
1986
OGDEN DUNS
863
95 km
2021
21-INDU TOLLESTON DUNES EAST
594
94 km
2017
17 INDU COWLES DUNES
522
85 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
24°F (-4°C)
2.8 in
Coldest
February
27°F (-3°C)
2.3 in
Driest
March
37°F (3°C)
2.4 in
April
48°F (9°C)
3.8 in
May
59°F (15°C)
4.2 in
June
69°F (20°C)
4.3 in
Wettest
July
72°F (22°C)
3.7 in
Warmest
August
71°F (22°C)
4.0 in
September
64°F (18°C)
3.5 in
October
52°F (11°C)
3.5 in
November
40°F (4°C)
2.9 in
December
30°F (-1°C)
2.7 in
Osceola has a seasonal temperature swing of 48°F / from 24°F in January to 72°F in July. Total annual precipitation is 40.2 inches, with June being the wettest month (4.3") and February the driest (2.3").