Casco, WI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Casco, WI in one place.
Sunny. High near 76, with temperatures falling to around 74 in the afternoon. Heat index values as high as 76. Northwest wind 3 to 8 mph.
Local Weather Overview
This forecast page for Casco, 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: Aug 23, 2026 9:38 AM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Casco, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 9:38 AM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Casco
Wednesday looks like the warmest upcoming period in Casco at 81 degrees F.
Monday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Tuesday at about 2 to 12 mph SW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 9:38 AM 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
Partly cloudy, with a low around 53. South southwest wind around 3 mph.
Mostly sunny, with a high near 80. Southwest wind 2 to 12 mph.
A chance of rain showers between 7pm and 1am, then showers and thunderstorms likely. Partly cloudy, with a low around 62. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly sunny, with a high near 81. Chance of precipitation is 70%.
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 59. Chance of precipitation is 70%.
Mostly sunny, with a high near 79.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 77.
Mostly clear, with a low around 56.
Mostly sunny, with a high near 77.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Sunny
|
76°F |
3 to 8 mph
NW
|
|
Monday Night
Aug 24
|
Partly Cloudy
|
53°F |
3 mph
SSW
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
80°F |
2 to 12 mph
SW
|
|
Tuesday Night
Aug 25
|
Showers And Thunderstorms Likely
|
62°F |
12 mph
SSW
|
|
Wednesday
Aug 26
|
Showers And Thunderstorms Likely
|
81°F |
12 mph
SW
|
|
Wednesday Night
Aug 26
|
Showers And Thunderstorms Likely
|
59°F |
5 to 8 mph
W
|
|
Thursday
Aug 27
|
Mostly Sunny
|
79°F |
10 mph
NW
|
|
Thursday Night
Aug 27
|
Partly Cloudy
|
56°F |
7 mph
N
|
|
Friday
Aug 28
|
Mostly Sunny
|
77°F |
8 mph
NNE
|
|
Friday Night
Aug 28
|
Mostly Clear
|
56°F |
3 to 7 mph
SE
|
|
Saturday
Aug 29
|
Mostly Sunny
|
77°F |
3 to 9 mph
SSW
|
|
Saturday Night
Aug 29
|
Mostly Cloudy then Slight Chance Rain Showers
|
59°F |
5 to 9 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Casco.