Fountain Valley, WI Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fountain Valley, WI in one place.
Partly sunny, with a high near 69. East northeast wind 3 to 7 mph.
Local Weather Overview
This forecast page for Fountain Valley, 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: Sep 14, 2026 6:55 PM CDT.
The active forecast window currently covers Sep 16 to Sep 20, 2026 for Fountain Valley, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 20, 2026
- Latest sync
- Sep 14, 2026 6:55 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Fountain Valley
Saturday looks like the warmest upcoming period in Fountain Valley at 74 degrees F.
Sunday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Saturday at about 7 to 10 mph WSW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 6:55 PM CDT
- Coverage
- 5 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
A chance of rain showers after 7pm. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
A chance of rain showers before 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 50%.
A chance of rain showers after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Rain showers likely. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
Rain showers likely before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.
A chance of rain showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Partly Sunny
|
69°F |
3 to 7 mph
ENE
|
|
Wednesday Night
Sep 16
|
Chance Rain Showers
|
56°F |
2 to 7 mph
E
|
|
Thursday
Sep 17
|
Chance Rain Showers
|
73°F |
5 mph
NNE
|
|
Thursday Night
Sep 17
|
Mostly Cloudy then Chance Rain Showers
|
56°F |
3 mph
NE
|
|
Friday
Sep 18
|
Rain Showers Likely
|
72°F |
2 to 7 mph
E
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms Likely
|
60°F |
7 mph
SE
|
|
Saturday
Sep 19
|
Showers And Thunderstorms Likely
|
74°F |
7 to 10 mph
WSW
|
|
Saturday Night
Sep 19
|
Chance Rain Showers
|
56°F |
5 to 8 mph
NNE
|
|
Sunday
Sep 20
|
Chance Rain Showers
|
68°F |
10 mph
NE
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
53°F |
5 to 8 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fountain Valley.