Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Plano experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 23°F in January while summers reach 73°F in July. Annual precipitation totals 33.8 inches. The area receives 27.9 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 662 feet.
Temperature
23°F Jan (-5°C)73°F Jul (23°C)
Annual Average
49.4°F
9% below US avg
January Average
23°F (-5°C)
July Average
73°F (23°C)
Geography
Elevation
662 ft (202 m)
Area
9.0 sq mi (23.3 km²)
Population Density
1,295/sq mi
Coordinates
41.6804°N, 88.5363°W
Timezone
America/Chicago
County
Kendall County County
Nearest Airport
Joliet Regional (JOT) 22 miles away
Precipitation & Snow
Annual Rainfall33.8"
11% below US avg
Snowfall27.9"
Wettest Month (May)4.06"
Driest Month (Jan)1.30"
Air Quality
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
80.3 / 100
Social Vulnerability
10.6 / 100
Community Resilience
96.0 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Very Low
Earthquake
Relatively Low
Wildfire
Very Low
Flood
Relatively Moderate
Hail
Very Low
Strong Wind
Relatively High
Heat Wave
Relatively Low
Winter Weather
Relatively Low
Lightning
Relatively Low
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
39 km
10 km
Feb 10, 2010
2 km NW of Lily Lake, Illinois
M3.8
32 km
10 km
Sep 2, 1999
8 km W of Amboy, Illinois
M3.5
75 km
5 km
Nov 4, 2013
1 km SSW of Lyons, Illinois
M3.2
61 km
1 km
Jul 15, 2024
2 km WNW of Somonauk, Illinois
M3.1
15 km
10 km
Mar 25, 2015
3 km WNW of Lake in the Hills, Illinois
M2.9
58 km
6 km
Jun 10, 2013
4 km NNE of Virgil, Illinois
M2.6
35 km
5 km
Mar 15, 2025
6 km W of Dwight, Illinois
M2.6
66 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
644 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF5. Total: 122 fatalities, 2,264 injuries.
Date
Rating
Distance
Path
Fatalities
Aug 28, 1990
EF5
16 km
16.4 mi
29
Apr 9, 2015
EF4
65 km
30.1 mi
2
Jun 29, 1979
EF4
31 km
5.4 mi
0
Jun 13, 1976
EF4
45 km
3.3 mi
2
Sep 28, 1972
EF4
87 km
5.2 mi
0
Apr 21, 1967
EF4
57 km
8.8 mi
1
Apr 21, 1967
EF4
59 km
15.0 mi
33
Apr 21, 1967
EF4
68 km
25.5 mi
24
Apr 11, 1965
EF4
61 km
9.1 mi
6
Apr 17, 1963
EF4
67 km
57.3 mi
1
Jun 20, 2021
EF3
29 km
17.6 mi
0
Feb 28, 2017
EF3
53 km
11.5 mi
2
Jun 22, 2015
EF3
43 km
16.3 mi
0
Jun 5, 2010
EF3
67 km
8.6 mi
0
Jun 5, 2010
EF3
95 km
7.8 mi
0
Jan 7, 2008
EF3
83 km
13.2 mi
0
Jan 7, 2008
EF3
98 km
10.8 mi
0
Apr 20, 2004
EF3
78 km
15.8 mi
8
Mar 27, 1991
EF3
38 km
15.0 mi
0
Apr 27, 1984
EF3
23 km
9.0 mi
1
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
137 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
8 wildfires (100+ acres) recorded within 100 km.
Largest: UNNAMED (1,741 acres, 2019).
Year
Name
Acres Burned
Distance
2019
UNNAMED
1,741
46 km
2019
UNNAMED
1,664
49 km
2021
NORTHEAST PRAIRIE UNIT 3
978
55 km
2024
NORTHEAST PRAIRIE 3 RX
938
53 km
2021
UNNAMED
738
52 km
2021
MIDDLE GRANT CREEK
700
47 km
2019
UNNAMED
698
53 km
2017
UNNAMED
549
47 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
23°F (-5°C)
1.3 in
Coldest, Driest
February
27°F (-3°C)
1.4 in
March
38°F (3°C)
2.2 in
April
49°F (9°C)
3.6 in
May
60°F (16°C)
4.1 in
Wettest
June
70°F (21°C)
4.0 in
July
73°F (23°C)
3.7 in
Warmest
August
71°F (22°C)
3.4 in
September
64°F (18°C)
3.0 in
October
52°F (11°C)
3.2 in
November
39°F (4°C)
2.3 in
December
28°F (-2°C)
1.7 in
Plano has a seasonal temperature swing of 51°F / from 23°F in January to 73°F in July. Total annual precipitation is 33.8 inches, with May being the wettest month (4.1") and January the driest (1.3").