Portage, WI Weather Forecast
Local 7-day forecast
Partly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Portage, WI in one place.
A chance of rain showers between 1pm and 4pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. South wind 5 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Portage, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 15, 2026 1:34 PM CDT.
The active forecast window currently covers Apr 17 to Apr 21, 2026 for Portage, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 1:34 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Portage
Friday looks like the warmest upcoming period in Portage at 78 degrees F.
Sunday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 1:34 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Mostly cloudy. Low around 41, with temperatures rising to around 48 overnight. Southwest wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely. Partly sunny, with a high near 52. West wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 30. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 49.
Partly cloudy, with a low around 29.
Sunny, with a high near 60.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 69.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 46. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Partly Sunny then Chance Showers And Thunderstorms
|
78°F |
5 to 15 mph
S
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms
|
41°F |
10 to 15 mph
SW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
52°F |
10 to 15 mph
W
|
|
Saturday Night
Apr 18
|
Slight Chance Snow Showers
|
30°F |
10 to 15 mph
W
|
|
Sunday
Apr 19
|
Mostly Sunny
|
49°F |
10 to 15 mph
NW
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
29°F |
0 to 10 mph
W
|
|
Monday
Apr 20
|
Sunny
|
60°F |
0 to 10 mph
S
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
43°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
69°F |
10 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
46°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Portage.
