NimbocastDecatur, IL Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Decatur, Macon County, Illinois.
Updated Jul 29, 2026, 2:17 PM local time · Radar refreshes every 5 minutes
☀️
Decatur
86°F
Wind 9 mph
Humidity 38%
Cloud cover 0%
UV index 8
Alerts 0
Active alerts
✓
No active National Weather Service alerts for Decatur, IL.
Decatur weather radar
Light
Heavy
Next 24 hours
Now
☀️
85°F
3 PM
☀️
86°F
4 PM
☀️
87°F
5 PM
☀️
86°F
6 PM
☀️
85°F
7 PM
☀️
83°F
8 PM
☀️
78°F
9 PM
☀️
75°F
10 PM
☀️
73°F
11 PM
☀️
70°F
12 AM
☀️
68°F
1 AM
☀️
66°F
2 AM
☀️
65°F
3 AM
☀️
63°F
4 AM
☀️
62°F
5 AM
☀️
61°F
6 AM
☀️
60°F
7 AM
☀️
63°F
8 AM
☀️
69°F
9 AM
⛅
74°F
10 AM
🌤️
78°F
11 AM
🌤️
82°F
12 PM
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84°F
1 PM
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86°F
7-day forecast
Today
Jul 29
☀️
87°F
59°F
Thu
Jul 30
☁️
88°F
60°F
Fri
Jul 31
🌧️
76°F
64°F
75%
Sat
Aug 1
🌧️
69°F
65°F
75%
Sun
Aug 2
☁️
78°F
62°F
19%
Mon
Aug 3
☀️
79°F
57°F
11%
Tue
Aug 4
☀️
81°F
61°F
15%
Weather near Decatur
37 mi
Springfield, IL40 mi
Mattoon, IL42 mi
Champaign, IL44 mi
Urbana, IL45 mi
Bloomington, IL47 mi
Normal, IL48 mi
Charleston, IL60 mi
Morton, IL
Alerts are relayed from the National Weather Service and may lag
the official source. In a life-threatening situation always follow
weather.gov and local emergency
broadcasts.