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Hourly
7 Days
14 Days
Monthly
°C
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°Celsius
°Fahrenheit
Monthly Historical Averages
Illinois Beach State Park Resort, IL
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Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
4°
6
5°
7
6°
8
6°
9
4°
10
2°
11
-2°
12
3°
13
1°
14
0°
15
1°
16
1°
17
-2°
18
-6°
19
-8°
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Monday, January 5, 2026
Day
4°
Feels 3
Wind
19 km/h SW
Gust
32 km/h
Humidity
70%
P.O.P
30%
Night
1°
Feels -3
Wind
15 km/h S
Gust
23 km/h
Humidity
100%
P.O.P
60%
Rain
<1 mm
Historical Averages
Jan 5
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
January
Average Temperature
High
-1°
Feels -6
Low
-8°
Feels -15
Average Precipitation
7 Days
Rain amount
5.6mm
Snow amount
23.2cm