Portage County, WI Weather Forecast
County weather hub
Mostly Sunny then Chance Rain Showers
Compare major city weather across Portage County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers after 1pm. Mostly sunny, with a high near 57. South southeast wind 1 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
County Weather Overview
This county weather page brings together forecast coverage for Portage County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Portage County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 11 to Apr 16, 2026
- Latest sync
- Apr 9, 2026 11:37 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Portage County
Monday looks like the warmest upcoming period in Portage County at 77 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Sunday at about 10 to 17 mph SSW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 11:37 PM CDT
- Coverage
- 6 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
A chance of rain showers before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 44. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Showers and thunderstorms. Mostly cloudy, with a high near 70. Chance of precipitation is 90%.
Showers and thunderstorms likely before 7pm, then rain likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
A slight chance of rain before 7am, then a chance of rain and a slight chance of thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Rain and a chance of thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 80%.
Rain likely and a slight chance of thunderstorms. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
Rain likely and a slight chance of thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
A chance of rain. Mostly cloudy, with a low around 42. Chance of precipitation is 50%.
A slight chance of rain. Mostly sunny, with a high near 70. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Mostly Sunny then Chance Rain Showers
|
57°F |
1 to 10 mph
SSE
|
|
Saturday Night
Apr 11
|
Showers And Thunderstorms
|
44°F |
10 mph
SSE
|
|
Sunday
Apr 12
|
Showers And Thunderstorms
|
70°F |
10 to 17 mph
SSW
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely then Light Rain Likely
|
59°F |
10 to 16 mph
SW
|
|
Monday
Apr 13
|
Chance Light Rain
|
77°F |
9 mph
SW
|
|
Monday Night
Apr 13
|
Light Rain
|
52°F |
10 mph
S
|
|
Tuesday
Apr 14
|
Light Rain Likely
|
69°F |
8 to 12 mph
ESE
|
|
Tuesday Night
Apr 14
|
Light Rain Likely
|
44°F |
10 mph
SE
|
|
Wednesday
Apr 15
|
Light Rain Likely
|
62°F |
13 mph
SSW
|
|
Wednesday Night
Apr 15
|
Chance Light Rain
|
42°F |
7 to 10 mph
SW
|
|
Thursday
Apr 16
|
Slight Chance Light Rain
|
70°F |
6 to 12 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Portage County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Portage County.
Largest mapped city population in this region: 25,949.
