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

Thu 1/1
Cloudy Weather
Day 34°
Night 19°
3
Fri 1/2
Cloudy Weather
Day 32°
Night 21°
41
Sat 1/3
Icy Road Conditions
Day 36°
Night 28°
55
Sun 1/4
Icy Road Conditions
Day 36°
Night 25°
56
Mon 1/5
Cloudy Weather
Day 36°
Night 23°
3
Tue 1/6
Icy Road Conditions
Day 34°
Night 21°
80
Wed 1/7
Cloudy Weather
Day 34°
Night 18°
25
Thu 1/8
Cloudy Weather
Day 27°
Night 21°
25
Fri 1/9
Cloudy Weather
Day 34°
Night 27°
25
Sat 1/10
Cloudy Weather
Day 39°
Night 19°
25
Sun 1/11
Cloudy Weather
Day 41°
Night 10°
25
Mon 1/12
Cloudy Weather
Day 21°
Night 9°
20
Tue 1/13
Cold Day
Day 21°
Night 12°
20
Wed 1/14
Cloudy Weather
Day 34°
Night 23°
20
Thu 1/15
Cloudy Weather
Day 41°
Night 21°
20
Fri 1/16
Cloudy Weather
Day 34°
Night 23°
20
Sat 1/17
Icy Road Conditions
Day 39°
Night 28°
60
Sun 1/18
Snowy Weather
Day 43°
Night 19°
75
Mon 1/19
Cloudy Weather
Day 43°
Night 12°
25
Tue 1/20
Cloudy Weather
Day 25°
Night 10°
25
Wed 1/21
Cloudy Weather
Day 25°
Night 10°
25
Thu 1/22
Cloudy Weather
Day 25°
Night 19°
20
Fri 1/23
Snowy Weather
Day 36°
Night 21°
63
Sat 1/24
Cloudy Weather
Day 36°
Night 19°
25
Sun 1/25
Cloudy Weather
Day 36°
Night 28°
25
Mon 1/26
Cloudy Weather
Day 43°
Night 28°
25
Tue 1/27
Rainy Weather
Day 43°
Night 28°
59
Wed 1/28
Cloudy Weather
Day 43°
Night 27°
20
Thu 1/29
Cloudy Weather
Day 43°
Night 28°
25
Fri 1/30
Cloudy Weather
Day 43°
Night 28°
25
Sat 1/31
Cloudy Weather
Day 45°
Night 27°
25