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Today Hourly 7 days 30 days January
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January 2026 Weather | Decatur, Illinois

Today 1/15
Cloudy Weather
Day 28°
Night 25°
8
Fri 1/16
Snowy Weather
Day 41°
Night 19°
55
Sat 1/17
Cold Day
Day 21°
Night 10°
25
Sun 1/18
Cloudy Weather
Day 27°
Night 9°
4
Mon 1/19
Cold Day
Day 19°
Night 7°
2
Tue 1/20
Cloudy Weather
Day 25°
Night 19°
7
Wed 1/21
Cloudy Weather
Day 36°
Night 25°
5
Thu 1/22
Cloudy Weather
Day 41°
Night 28°
2
Fri 1/23
Icy Road Conditions
Day 34°
Night 21°
60
Sat 1/24
Icy Road Conditions
Day 28°
Night 12°
65
Sun 1/25
Cloudy Weather
Day 28°
Night 18°
4
Mon 1/26
Cloudy Weather
Day 34°
Night 21°
6
Tue 1/27
Cloudy Weather
Day 34°
Night 21°
25
Wed 1/28
Snowy Weather
Day 34°
Night 19°
55
Thu 1/29
Cloudy Weather
Day 27°
Night 9°
25
Fri 1/30
Cold Day
Day 19°
Night 9°
20
Sat 1/31
Cloudy Weather
Day 25°
Night 19°
25