NimbocastDeKalb, IL Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for DeKalb, DeKalb County, Illinois.
Updated Jul 29, 2026, 2:17 PM local time · Radar refreshes every 5 minutes
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DeKalb
81°F
Wind 10 mph
Humidity 38%
Cloud cover 0%
UV index 7
Alerts 0
Active alerts
✓
No active National Weather Service alerts for DeKalb, IL.
DeKalb weather radar
Light
Heavy
Next 24 hours
Now
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81°F
3 PM
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82°F
4 PM
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82°F
5 PM
☀️
82°F
6 PM
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81°F
7 PM
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77°F
8 PM
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73°F
9 PM
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70°F
10 PM
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68°F
11 PM
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66°F
12 AM
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64°F
1 AM
☀️
63°F
2 AM
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62°F
3 AM
☀️
61°F
4 AM
☀️
60°F
5 AM
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60°F
6 AM
☀️
59°F
7 AM
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63°F
8 AM
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69°F
9 AM
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74°F
10 AM
☀️
78°F
11 AM
⛅
81°F
12 PM
🌤️
83°F
1 PM
☁️
85°F
7-day forecast
Today
Jul 29
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82°F
58°F
Thu
Jul 30
☁️
87°F
59°F
Fri
Jul 31
🌦️
73°F
63°F
77%
Sat
Aug 1
🌦️
67°F
62°F
75%
Sun
Aug 2
☁️
76°F
59°F
10%
Mon
Aug 3
☀️
77°F
57°F
5%
Tue
Aug 4
☀️
77°F
59°F
8%
Weather near DeKalb
5 mi
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Geneva, IL23 mi
North Aurora, IL24 mi
Belvidere, 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.