Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Volo experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 22°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 37.0 inches. The area receives 34.5 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 764 feet.
Temperature
22°F Jan (-6°C)73°F Jul (23°C)
Annual Average
48.6°F
10% below US avg
January Average
22°F (-6°C)
July Average
73°F (23°C)
Sunny Days
260 days/yr
Geography
Elevation
764 ft (233 m)
Area
4.1 sq mi (10.7 km²)
Population Density
1,553/sq mi
Coordinates
42.3303°N, 88.1587°W
Timezone
America/Chicago
County
McHenry County County
Nearest Airport
Kenosha Regional (ENW) 22 miles away
Precipitation & Snow
Annual Rainfall37.0"
3% below US avg
Snowfall34.5"
Wettest Month (Aug)4.13"
Driest Month (Feb)1.26"
Air Quality
AQI Median
43.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Moderate
Risk Score
90.8 / 100
Social Vulnerability
10.6 / 100
Community Resilience
84.0 / 100
Hazard Breakdown
Tornado
Relatively High
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 Moderate
Ice Storm
Relatively Low
Drought
Relatively Low
Cold Wave
Relatively High
Landslide
Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
8 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M4.2.
Jun 28, 2004
12 km NW of Dayton, Illinois
M4.2
115 km
10 km
Feb 10, 2010
2 km NW of Lily Lake, Illinois
M3.8
49 km
10 km
Sep 2, 1999
8 km W of Amboy, Illinois
M3.5
125 km
5 km
Nov 4, 2013
1 km SSW of Lyons, Illinois
M3.2
65 km
1 km
Jul 15, 2024
2 km WNW of Somonauk, Illinois
M3.1
89 km
10 km
Mar 25, 2015
3 km WNW of Lake in the Hills, Illinois
M2.9
23 km
6 km
Jun 10, 2013
4 km NNE of Virgil, Illinois
M2.6
48 km
5 km
Mar 15, 2025
6 km W of Dwight, Illinois
M2.6
141 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
507 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF5. Total: 106 fatalities, 2,189 injuries.
Date
Rating
Distance
Path
Fatalities
Aug 28, 1990
EF5
74 km
16.4 mi
29
Apr 27, 1984
EF4
74 km
6.5 mi
1
Jun 29, 1979
EF4
90 km
5.4 mi
0
Jun 13, 1976
EF4
75 km
3.3 mi
2
Sep 28, 1972
EF4
24 km
5.2 mi
0
Apr 21, 1967
EF4
64 km
25.5 mi
24
Apr 21, 1967
EF4
78 km
15.0 mi
33
Apr 21, 1967
EF4
22 km
8.8 mi
1
Apr 11, 1965
EF4
22 km
9.1 mi
6
Jun 20, 2021
EF3
65 km
17.6 mi
0
Jan 7, 2008
EF3
56 km
13.2 mi
0
Jan 7, 2008
EF3
28 km
10.8 mi
0
Mar 27, 1991
EF3
84 km
15.0 mi
0
Apr 27, 1984
EF3
88 km
9.0 mi
1
Mar 12, 1976
EF3
80 km
22.6 mi
0
Jul 19, 1963
EF3
29 km
10.6 mi
0
Jun 22, 2024
EF2
85 km
6.0 mi
0
Nov 22, 2010
EF2
67 km
18.1 mi
0
Jul 22, 2010
EF2
60 km
1.0 mi
0
Jun 21, 2010
EF2
66 km
5.2 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
127 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
2 wildfires (100+ acres) recorded within 100 km.
Largest: IBSP SOUTH F1 RX (690 acres, 2024).
Year
Name
Acres Burned
Distance
2024
IBSP SOUTH F1 RX
690
30 km
2024
RX-HWY Y - SOUTH
553
86 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
22°F (-6°C)
1.6 in
Coldest
February
25°F (-4°C)
1.3 in
Driest
March
36°F (2°C)
2.5 in
April
47°F (8°C)
3.6 in
May
58°F (14°C)
3.4 in
June
67°F (20°C)
3.9 in
July
73°F (23°C)
3.9 in
Warmest
August
70°F (21°C)
4.1 in
Wettest
September
63°F (17°C)
3.8 in
October
51°F (11°C)
2.4 in
November
38°F (4°C)
2.7 in
December
26°F (-3°C)
2.2 in
Volo has a seasonal temperature swing of 51°F / from 22°F in January to 73°F in July. Total annual precipitation is 35.4 inches, with August being the wettest month (4.1") and February the driest (1.3").
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