Winnebago County, IL Weather Forecast
County weather hub
Rain Showers Likely
Compare major city weather across Winnebago County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers likely before 1pm. Partly sunny, with a high near 57. North wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Winnebago County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 5 of 5 mapped cities in Winnebago County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 2:43 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Winnebago County
Monday looks like the warmest upcoming period in Winnebago County at 77 degrees F.
Friday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Sunday at about 15 to 25 mph SSW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 2:43 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 34. Northeast wind 5 to 10 mph.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 58. East southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
Showers and thunderstorms likely. Mostly cloudy, with a low around 61.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 63.
Showers and thunderstorms. Mostly cloudy, with a high near 75.
Showers and thunderstorms. Mostly cloudy, with a low around 48.
Showers and thunderstorms likely. Mostly cloudy, with a high near 64.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Rain Showers Likely
|
57°F |
10 mph
N
|
|
Friday Night
Apr 10
|
Mostly Clear
|
34°F |
5 to 10 mph
NE
|
|
Saturday
Apr 11
|
Mostly Sunny then Slight Chance Rain Showers
|
58°F |
5 to 10 mph
ESE
|
|
Saturday Night
Apr 11
|
Chance Showers And Thunderstorms
|
51°F |
10 to 15 mph
SSE
|
|
Sunday
Apr 12
|
Chance Rain Showers
|
73°F |
15 to 25 mph
SSW
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
61°F |
20 mph
SSW
|
|
Monday
Apr 13
|
Chance Showers And Thunderstorms
|
77°F |
15 to 20 mph
SW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
63°F |
15 to 20 mph
SSW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms
|
75°F |
15 to 20 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
48°F |
15 mph
SSE
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
64°F |
15 mph
S
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
42°F |
10 to 15 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Winnebago County.
Coverage
Forecast coverage currently spans 5 of 5 mapped cities in Winnebago County.
Largest mapped city population in this region: 144,835.
