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

Today 8/12
Sunny with a Chance of Thunderstorms
Day 90°
Night 72°
99
Thu 8/13
Stormy Weather
Day 84°
Night 72°
55
Fri 8/14
Stormy Weather
Day 91°
Night 73°
55
Sat 8/15
Cloudy Weather
Day 93°
Night 75°
25
Sun 8/16
Sunny with a Chance of Thunderstorms
Day 90°
Night 70°
88
Mon 8/17
Cloudy Weather
Day 81°
Night 66°
25
Tue 8/18
Cloudy Weather
Day 81°
Night 66°
1
Wed 8/19
Cloudy Weather
Day 86°
Night 70°
7
Thu 8/20
Sunny Weather
Day 84°
Night 68°
2
Fri 8/21
Sunny Weather
Day 88°
Night 68°
0
Sat 8/22
Sunny Weather
Day 84°
Night 68°
1
Sun 8/23
Sunny with a Chance of Thunderstorms
Day 81°
Night 64°
72
Mon 8/24
Cloudy Weather
Day 79°
Night 63°
25
Tue 8/25
Cloudy Weather
Day 82°
Night 64°
25
Wed 8/26
Cloudy Weather
Day 82°
Night 70°
20
Thu 8/27
Cloudy Weather
Day 77°
Night 61°
Fri 8/28
Cloudy Weather
Day 79°
Night 61°
Sat 8/29
Cloudy Weather
Day 81°
Night 64°
Sun 8/30
Rainy Weather
Day 79°
Night 66°
Mon 8/31
Rainy Weather
Day 77°
Night 68°

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