Portage County, WI Weather Forecast
County weather hub
Sunny
Compare major city weather across Portage County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny. High near 64, with temperatures falling to around 61 in the afternoon. Northwest wind around 7 mph.
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
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 7:51 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 65 degrees F.
Friday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Friday at about 14 to 24 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 7:51 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 cloudy, with a low around 47. North northwest wind around 5 mph.
Partly sunny, with a high near 62. North wind 2 to 7 mph.
Mostly cloudy, with a low around 40. East northeast wind around 5 mph.
Rain showers. Mostly cloudy, with a high near 58. East northeast wind 3 to 7 mph. Chance of precipitation is 80%.
Rain showers before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 80%.
Mostly sunny, with a high near 52.
Widespread frost after 11pm. Mostly clear, with a low around 29.
Widespread frost and patchy fog before 9am. Sunny, with a high near 58.
Clear, with a low around 35.
Sunny, with a high near 64.
Partly cloudy, with a low around 41.
Patchy fog before 9am. Partly sunny, with a high near 65.
Areas of fog after 3am. Partly cloudy, with a low around 39.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 13
|
Sunny
|
64°F |
7 mph
NW
|
|
Tonight
Oct 13
|
Mostly Cloudy
|
47°F |
5 mph
NNW
|
|
Wednesday
Oct 14
|
Partly Sunny
|
62°F |
2 to 7 mph
N
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy
|
40°F |
5 mph
ENE
|
|
Thursday
Oct 15
|
Rain Showers
|
58°F |
3 to 7 mph
ENE
|
|
Thursday Night
Oct 15
|
Rain Showers
|
37°F |
3 to 18 mph
NW
|
|
Friday
Oct 16
|
Mostly Sunny
|
52°F |
14 to 24 mph
NW
|
|
Friday Night
Oct 16
|
Widespread Frost
|
29°F |
1 to 10 mph
WNW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
58°F |
1 to 14 mph
SW
|
|
Saturday Night
Oct 17
|
Clear
|
35°F |
13 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
64°F |
13 to 16 mph
SW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
41°F |
2 to 12 mph
SW
|
|
Monday
Oct 19
|
Patchy Fog then Partly Sunny
|
65°F |
1 to 5 mph
WSW
|
|
Monday Night
Oct 19
|
Partly Cloudy then Areas Of Fog
|
39°F |
0 to 3 mph
N
|
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.
