Germantown, WI Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Germantown, WI in one place.
Partly sunny, with a high near 91. Heat index values as high as 101. South wind 3 to 9 mph.
Local Weather Overview
This forecast page for Germantown, 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: Jul 26, 2026 1:58 AM CDT.
The active forecast window currently covers Jul 26 to Aug 1, 2026 for Germantown, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 26 to Aug 1, 2026
- Latest sync
- Jul 26, 2026 1:58 AM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Germantown
Sunday looks like the warmest upcoming period in Germantown at 91 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Monday at about 5 to 12 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 26, 2026 1:58 AM CDT
- Coverage
- 7 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
A chance of showers and thunderstorms between midnight and 4am, then a chance of showers and thunderstorms between 4am and 5am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Heat index values as high as 99. Southwest wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 99. Southwest wind 5 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 67. Northwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Sunny, with a high near 86. North wind around 7 mph.
Mostly clear, with a low around 62. Northeast wind 2 to 6 mph.
Sunny, with a high near 84. East wind around 3 mph.
Mostly clear, with a low around 63. Southeast wind around 3 mph.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind around 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southeast wind around 3 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 84. West wind around 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. Northwest wind 1 to 5 mph. Chance of precipitation is 30%.
A chance of rain showers before 1pm. Mostly sunny, with a high near 85. Northwest wind 2 to 6 mph. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 26
|
Partly Sunny
|
91°F |
3 to 9 mph
S
|
|
Sunday Night
Jul 26
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
72°F |
5 to 9 mph
SW
|
|
Monday
Jul 27
|
Slight Chance Showers And Thunderstorms
|
91°F |
5 to 12 mph
SW
|
|
Monday Night
Jul 27
|
Slight Chance Rain Showers then Partly Cloudy
|
67°F |
6 to 10 mph
NW
|
|
Tuesday
Jul 28
|
Sunny
|
86°F |
7 mph
N
|
|
Tuesday Night
Jul 28
|
Mostly Clear
|
62°F |
2 to 6 mph
NE
|
|
Wednesday
Jul 29
|
Sunny
|
84°F |
3 mph
E
|
|
Wednesday Night
Jul 29
|
Mostly Clear
|
63°F |
3 mph
SE
|
|
Thursday
Jul 30
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
5 mph
S
|
|
Thursday Night
Jul 30
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
65°F |
3 mph
SE
|
|
Friday
Jul 31
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
84°F |
5 mph
W
|
|
Friday Night
Jul 31
|
Chance Showers And Thunderstorms
|
64°F |
1 to 5 mph
NW
|
|
Saturday
Aug 1
|
Chance Rain Showers
|
85°F |
2 to 6 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Germantown.