Winnebago County, WI Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Winnebago County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 50. North northwest wind around 8 mph. New rainfall amounts less than a tenth 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 6 of 6 mapped cities in Winnebago County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 10 to Apr 16, 2026
- Latest sync
- Apr 9, 2026 8:11 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Winnebago County
Monday looks like the warmest upcoming period in Winnebago County at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Sunday at about 14 to 21 mph SSW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 8:11 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- GRB
- Radar station
- KGRB
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 32. Northeast wind 2 to 6 mph.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 56. South southeast wind 3 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 44. South southeast wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 69. Chance of precipitation is 80%.
A chance of showers and thunderstorms before 7pm, then a chance of rain. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
A chance of rain before 7am, then a chance of rain and a slight chance of thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Rain likely and a chance of thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Rain likely and a chance of thunderstorms. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Rain and a slight chance of thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 80%.
Rain likely. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
A slight chance of rain. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Partly Sunny
|
50°F |
8 mph
NNW
|
|
Friday Night
Apr 10
|
Mostly Clear
|
32°F |
2 to 6 mph
NE
|
|
Saturday
Apr 11
|
Mostly Sunny then Slight Chance Rain Showers
|
56°F |
3 to 10 mph
SSE
|
|
Saturday Night
Apr 11
|
Showers And Thunderstorms
|
44°F |
13 mph
SSE
|
|
Sunday
Apr 12
|
Showers And Thunderstorms
|
69°F |
14 to 21 mph
SSW
|
|
Sunday Night
Apr 12
|
Chance Showers And Thunderstorms then Chance Light Rain
|
60°F |
14 to 18 mph
SW
|
|
Monday
Apr 13
|
Chance Light Rain
|
75°F |
10 to 14 mph
SW
|
|
Monday Night
Apr 13
|
Light Rain Likely
|
55°F |
12 mph
S
|
|
Tuesday
Apr 14
|
Light Rain Likely
|
70°F |
12 mph
SSE
|
|
Tuesday Night
Apr 14
|
Light Rain
|
48°F |
12 mph
SSE
|
|
Wednesday
Apr 15
|
Light Rain Likely
|
64°F |
12 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Light Rain
|
45°F |
12 mph
SW
|
|
Thursday
Apr 16
|
Slight Chance Light Rain
|
69°F |
12 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Winnebago County.
Coverage
Forecast coverage currently spans 6 of 6 mapped cities in Winnebago County.
Largest mapped city population in this region: 15,603.
