Portland, WI Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Portland, WI in one place.
Rain showers. Mostly cloudy, with a high near 59. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Portland, 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: Oct 13, 2026 11:36 PM CDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Portland, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 11:36 PM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Portland
Tuesday looks like the warmest upcoming period in Portland at 69 degrees F.
Friday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Friday at about 14 to 22 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 11:36 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ARX
- Radar station
- KARX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers before 1am. Mostly cloudy, with a low around 40. Northwest wind 8 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Mostly sunny, with a high near 54. Northwest wind 14 to 22 mph, with gusts as high as 35 mph.
Widespread frost after 1am. Clear, with a low around 32. West wind 1 to 9 mph, with gusts as high as 20 mph.
Widespread frost before 9am. Sunny, with a high near 59. Southwest wind 1 to 14 mph, with gusts as high as 24 mph.
Clear, with a low around 40. Southwest wind around 13 mph, with gusts as high as 25 mph.
Sunny, with a high near 65. Southwest wind 10 to 17 mph, with gusts as high as 26 mph.
Partly cloudy, with a low around 45. Southwest wind 3 to 12 mph, with gusts as high as 24 mph.
Partly sunny, with a high near 66. West wind around 3 mph.
Partly cloudy, with a low around 44. South wind around 2 mph.
Mostly sunny, with a high near 69. Southeast wind 1 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Rain Showers
|
59°F |
5 to 10 mph
NE
|
|
Thursday Night
Oct 15
|
Rain Showers
|
40°F |
8 to 18 mph
NW
|
|
Friday
Oct 16
|
Mostly Sunny
|
54°F |
14 to 22 mph
NW
|
|
Friday Night
Oct 16
|
Clear then Widespread Frost
|
32°F |
1 to 9 mph
W
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
59°F |
1 to 14 mph
SW
|
|
Saturday Night
Oct 17
|
Clear
|
40°F |
13 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
65°F |
10 to 17 mph
SW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
45°F |
3 to 12 mph
SW
|
|
Monday
Oct 19
|
Partly Sunny
|
66°F |
3 mph
W
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
44°F |
2 mph
S
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
69°F |
1 to 8 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Portland.