Porterfield, WI Weather Forecast
Local 7-day forecast
Rain
Track current conditions, temperature changes, wind, and the full daily outlook for Porterfield, WI in one place.
Rain. Cloudy. High near 56, with temperatures falling to around 54 in the afternoon. East wind around 7 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 Porterfield, 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 15, 2026 6:14 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Porterfield, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 6:14 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Porterfield
Tuesday looks like the warmest upcoming period in Porterfield at 66 degrees F.
Friday Night is the coolest period ahead with temperatures near 25 degrees F.
The strongest winds are forecast for Friday at about 13 to 22 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 6:14 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
Rain. Cloudy. Low around 38, with temperatures rising to around 43 overnight. North northeast wind 3 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Rain before 2pm. Mostly cloudy. High near 51, with temperatures falling to around 46 in the afternoon. North northwest wind 13 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Widespread frost after 10pm. Mostly clear, with a low around 25. Northwest wind 3 to 17 mph, with gusts as high as 26 mph.
Widespread frost before 9am. Sunny, with a high near 56. West southwest wind 3 to 16 mph, with gusts as high as 25 mph.
Clear, with a low around 31.
Sunny, with a high near 64.
Mostly clear, with a low around 35.
Mostly sunny, with a high near 64.
Patchy fog after 3am. Partly cloudy, with a low around 33.
Patchy fog before 9am. Sunny, with a high near 66.
Mostly clear, with a low around 36.
Sunny, with a high near 66.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 43. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Rain
|
56°F |
7 mph
E
|
|
Tonight
Oct 15
|
Rain
|
38°F |
3 to 12 mph
NNE
|
|
Friday
Oct 16
|
Light Rain
|
51°F |
13 to 22 mph
NNW
|
|
Friday Night
Oct 16
|
Widespread Frost
|
25°F |
3 to 17 mph
NW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
56°F |
3 to 16 mph
WSW
|
|
Saturday Night
Oct 17
|
Clear
|
31°F |
12 to 15 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
64°F |
15 to 18 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
35°F |
6 to 16 mph
SW
|
|
Monday
Oct 19
|
Mostly Sunny
|
64°F |
7 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy then Patchy Fog
|
33°F |
1 to 5 mph
W
|
|
Tuesday
Oct 20
|
Patchy Fog then Sunny
|
66°F |
0 to 5 mph
NE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
36°F |
0 to 3 mph
ENE
|
|
Wednesday
Oct 21
|
Sunny
|
66°F |
0 to 9 mph
ESE
|
|
Wednesday Night
Oct 21
|
Partly Cloudy then Slight Chance Rain Showers
|
43°F |
5 to 8 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Porterfield.
