NimbocastOttawa, IL Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Ottawa, LaSalle County, Illinois.
Updated Jul 29, 2026, 2:17 PM local time · Radar refreshes every 5 minutes
☀️
Ottawa
83°F
Wind 9 mph
Humidity 43%
Cloud cover 0%
UV index 7
Alerts 0
Active alerts
✓
No active National Weather Service alerts for Ottawa, IL.
Ottawa weather radar
Light
Heavy
Next 24 hours
Now
☀️
83°F
3 PM
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84°F
4 PM
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84°F
5 PM
☀️
83°F
6 PM
☀️
83°F
7 PM
☀️
80°F
8 PM
☀️
75°F
9 PM
☀️
72°F
10 PM
☀️
69°F
11 PM
☀️
67°F
12 AM
☀️
65°F
1 AM
☀️
63°F
2 AM
☀️
62°F
3 AM
☀️
61°F
4 AM
☀️
60°F
5 AM
☀️
59°F
6 AM
☀️
58°F
7 AM
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61°F
8 AM
☀️
67°F
9 AM
☁️
74°F
10 AM
☁️
78°F
11 AM
⛅
81°F
12 PM
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84°F
1 PM
☀️
86°F
7-day forecast
Today
Jul 29
☀️
84°F
59°F
Thu
Jul 30
☁️
89°F
58°F
Fri
Jul 31
🌧️
75°F
64°F
79%
Sat
Aug 1
⛈️
71°F
64°F
79%
Sun
Aug 2
☁️
77°F
61°F
13%
Mon
Aug 3
☀️
80°F
58°F
6%
Tue
Aug 4
☀️
81°F
60°F
7%
Weather near Ottawa
29 mi
Yorkville, IL34 mi
Oswego, IL35 mi
Shorewood, IL37 mi
Montgomery, IL38 mi
Plainfield, IL39 mi
Aurora, IL41 mi
Joliet, IL41 mi
DeKalb, 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.