Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bourbon experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 24°F in January while summers reach 73°F in July. The area gets 275 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 40.3 inches. The area receives 54.9 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 847 feet.
Temperature
24°F Jan (-4°C)73°F Jul (23°C)
Annual Average
50.0°F
7% below US avg
January Average
24°F (-4°C)
July Average
73°F (23°C)
Sunny Days
275 days/yr
Geography
Elevation
847 ft (258 m)
Area
1.2 sq mi (3.0 km²)
Population Density
1,579/sq mi
Coordinates
41.2994°N, 86.1169°W
Timezone
America/Indiana/Indianapolis
County
Marshall County County
Nearest Airport
South Bend International (SBN) 30 miles away
Precipitation & Snow
Annual Rainfall40.3"
6% above US avg
Snowfall54.9"
Wettest Month (Jun)4.17"
Driest Month (Feb)1.77"
Air Quality
AQI Median
41.0
Rating
Good
Natural Hazard Risk
Overall Risk
Very Low
Risk Score
41.6 / 100
Social Vulnerability
22.6 / 100
Community Resilience
64.8 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Very Low
Earthquake
Very Low
Wildfire
Very Low
Flood
Relatively Low
Hail
Relatively Low
Strong Wind
Relatively Low
Heat Wave
Relatively Low
Winter Weather
Relatively Low
Lightning
Relatively Moderate
Ice Storm
Relatively Low
Drought
Relatively Low
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
119 km
4 km
Jun 30, 2015
5 km NNE of Burlington, Michigan
M3.3
130 km
5 km
Jan 26, 2012
5 km NE of Topeka, Indiana
M3.0
61 km
5 km
Apr 17, 1990
8 km NW of Fort Recovery, Ohio
M3.0
142 km
5 km
Jun 12, 2015
6 km NW of Convoy, Ohio
M2.6
120 km
5 km
Jan 30, 2004
2 km S of Rockford, Ohio
M2.5
142 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
494 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 118 fatalities, 1,449 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 11, 1965
EF4
92 km
90.3 mi
23
Apr 11, 1965
EF4
32 km
37.0 mi
36
Apr 11, 1965
EF4
25 km
21.2 mi
31
Apr 11, 1965
EF4
50 km
21.6 mi
5
Mar 6, 1956
EF4
93 km
1.9 mi
1
May 27, 2019
EF3
35 km
13.7 mi
0
Aug 24, 2016
EF3
93 km
8.6 mi
0
Jun 5, 2010
EF3
74 km
7.5 mi
0
Oct 18, 2007
EF3
4 km
20.3 mi
0
May 30, 2004
EF3
63 km
4.5 mi
0
Oct 24, 2001
EF3
44 km
47.0 mi
1
Mar 27, 1991
EF3
91 km
21.0 mi
1
Jul 7, 1977
EF3
95 km
11.6 mi
0
Mar 12, 1976
EF3
45 km
12.1 mi
0
Mar 12, 1976
EF3
84 km
12.6 mi
0
Apr 3, 1974
EF3
56 km
36.2 mi
5
May 16, 1968
EF3
67 km
50.3 mi
1
Oct 24, 1967
EF3
96 km
0.1 mi
0
Nov 26, 1965
EF3
55 km
1.0 mi
0
Apr 11, 1965
EF3
39 km
35.6 mi
10
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
78 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
98 km
2021
21-INDU TOLLESTON DUNES EAST
594
97 km
2017
17 INDU COWLES DUNES
522
91 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
24°F (-4°C)
1.9 in
Coldest
February
27°F (-3°C)
1.8 in
Driest
March
37°F (3°C)
2.8 in
April
49°F (9°C)
3.8 in
May
60°F (16°C)
3.9 in
June
69°F (21°C)
4.2 in
Wettest
July
73°F (23°C)
3.8 in
Warmest
August
70°F (21°C)
3.6 in
September
64°F (18°C)
3.6 in
October
52°F (11°C)
2.9 in
November
40°F (5°C)
3.2 in
December
29°F (-2°C)
2.8 in
Bourbon has a seasonal temperature swing of 49°F / from 24°F in January to 73°F in July. Total annual precipitation is 38.2 inches, with June being the wettest month (4.2") and February the driest (1.8").
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