Aurora, IL Weather

The annual precipitation for Aurora is about 40 inches. The record high for Aurora is 111 °F (44 °C), on July 14, 1936. The record low is −31 °F (−35 °C), on January 16, 2009. The average high temperature for Aurora in July is 83.5 °F (28.6 °C), the average January low is 12.6 °F (−10.8 °C).

On July 17–18, 1996, a major flood struck Aurora, with 16.9 inches (430 mm) of rain in a 24-hour period, which is an Illinois state record, and the second highest ever nationally. Flooding occurred in almost every low-lying area in the city, and in neighborhoods bordering the Fox River, causing major damage in some neighborhoods. The flooding was just as bad in Blackberry Creek, on Aurora’s far west side.

Aurora has not been struck by any major tornadoes in recent history, although they occur in Northern Illinois annually. In 1906, a tornado went through the Aurora Driving Park, a large recreation/amusement park and race track where the Riddle Highlands neighborhood and Northgate shopping center is today. The tornado hit during the afternoon performance of the Ringling Brothers “Greatest Show on Earth” circus, when the park was crowded. It killed 2 people and injured 22, but the grandstand was still filled for the evening performance. Weak tornadoes struck the city in 1954, 1958, 1960, and 1991. In 1990, the supercell thunderstorm that produced the deadly Plainfield Tornado passed over the city, dropping golf ball sized hail and causing wind damage. Less than ten minutes after passing through Aurora, the storm produced an F5 tornado, which touched down in nearby Oswego, less than 5 miles from downtown. The tornado then traveled through Plainfield and Joliet, killing 29 people.

The city can receive heavy snowfall and experiences blizzards periodically.

Aurora was hit with one of the strongest earthquakes ever to strike Illinois, a M 5.1, on May 26, 1909. It put cracks through chimneys and could be felt 500,000 sq mi (1,300,000 km) around.

Average Temperature
Jan
28 °F
-2 °C
Feb
28 °F
-2 °C
Mar
41 °F
5 °C
Apr
55 °F
13 °C
May
66 °F
19 °C
Jun
75 °F
24 °C
Jul
82 °F
28 °C
Aug
77 °F
25 °C
Sep
75 °F
24 °C
Oct
57 °F
14 °C
Nov
39 °F
4 °C
Dec
39 °F
4 °C
Humidity
Jan
79%
Feb
76%
Mar
67%
Apr
67%
May
80%
Jun
79%
Jul
79%
Aug
77%
Sep
84%
Oct
76%
Nov
78%
Dec
78%
Rain
Jan
41mm
Feb
73mm
Mar
57mm
Apr
76mm
May
303mm
Jun
71mm
Jul
212mm
Aug
97mm
Sep
189mm
Oct
120mm
Nov
37mm
Dec
27mm
Clouds
Jan
64%
Feb
70%
Mar
60%
Apr
52%
May
66%
Jun
45%
Jul
25%
Aug
30%
Sep
53%
Oct
46%
Nov
64%
Dec
59%
Air quality US AQI
Jan
26
Feb
25
Mar
26
Apr
23
May
25
Jun
28
Jul
36
Aug
34
Sep
25
Oct
21
Nov
24
Dec
30
Sun
Jan
2UVI
Feb
3UVI
Mar
3UVI
Apr
5UVI
May
6UVI
Jun
8UVI
Jul
9UVI
Aug
7UVI
Sep
6UVI
Oct
4UVI
Nov
2UVI
Dec
1UVI