NimbocastJanesville, WI Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Janesville, Rock County, Wisconsin.
Updated Jul 29, 2026, 2:56 PM local time · Radar refreshes every 5 minutes
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Janesville
82°F
Wind 5 mph
Humidity 38%
Cloud cover 0%
UV index 7
Alerts 0
Active alerts
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No active National Weather Service alerts for Janesville, WI.
Janesville 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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83°F
5 PM
☀️
83°F
6 PM
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83°F
7 PM
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81°F
8 PM
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77°F
9 PM
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72°F
10 PM
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69°F
11 PM
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67°F
12 AM
☀️
66°F
1 AM
☀️
65°F
2 AM
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64°F
3 AM
☀️
63°F
4 AM
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62°F
5 AM
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61°F
6 AM
☀️
60°F
7 AM
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62°F
8 AM
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68°F
9 AM
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73°F
10 AM
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79°F
11 AM
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83°F
12 PM
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86°F
1 PM
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88°F
7-day forecast
Today
Jul 29
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83°F
58°F
Thu
Jul 30
☁️
90°F
60°F
Fri
Jul 31
🌧️
73°F
62°F
78%
Sat
Aug 1
🌧️
73°F
61°F
68%
Sun
Aug 2
☀️
76°F
57°F
9%
Mon
Aug 3
🌤️
80°F
57°F
3%
Tue
Aug 4
🌤️
81°F
61°F
7%
Weather near Janesville
12 mi
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Madison, WI36 mi
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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.