Winnebago County, IL Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Winnebago County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a low around 58. East wind around 5 mph, with gusts as high as 15 mph.
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
- May 30 to Jun 5, 2026
- Latest sync
- May 30, 2026 2:43 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Winnebago County
Thursday looks like the warmest upcoming period in Winnebago County at 88 degrees F.
Saturday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph E.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 2:43 AM CDT
- Coverage
- 7 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
Partly sunny. High near 78, with temperatures falling to around 76 in the afternoon. East wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly cloudy, with a low around 53. East wind 5 to 15 mph, with gusts as high as 25 mph.
Partly sunny, with a high near 78. East southeast wind 5 to 10 mph.
Mostly cloudy, with a low around 54. East wind 0 to 5 mph.
Partly sunny, with a high near 82.
Partly cloudy, with a low around 53.
Sunny, with a high near 83.
Mostly clear, with a low around 53.
Sunny, with a high near 86.
Mostly clear, with a low around 60.
Mostly sunny, with a high near 88.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 64.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 30
|
Mostly Cloudy
|
58°F |
5 mph
E
|
|
Saturday
May 30
|
Partly Sunny
|
78°F |
5 to 15 mph
E
|
|
Saturday Night
May 30
|
Mostly Cloudy
|
53°F |
5 to 15 mph
E
|
|
Sunday
May 31
|
Partly Sunny
|
78°F |
5 to 10 mph
ESE
|
|
Sunday Night
May 31
|
Mostly Cloudy
|
54°F |
0 to 5 mph
E
|
|
Monday
Jun 1
|
Partly Sunny
|
82°F |
0 to 10 mph
NE
|
|
Monday Night
Jun 1
|
Partly Cloudy
|
53°F |
5 to 10 mph
ENE
|
|
Tuesday
Jun 2
|
Sunny
|
83°F |
5 to 10 mph
ENE
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
53°F |
0 to 10 mph
ESE
|
|
Wednesday
Jun 3
|
Sunny
|
86°F |
0 to 5 mph
S
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
60°F |
5 to 10 mph
S
|
|
Thursday
Jun 4
|
Mostly Sunny
|
88°F |
5 to 15 mph
SSW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
SSW
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
86°F |
5 to 15 mph
SW
|
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.
