Union Grove, WI Weather Forecast
Local 7-day forecast
Mostly Clear then Patchy Fog
Track current conditions, temperature changes, wind, and the full daily outlook for Union Grove, WI in one place.
Patchy fog after midnight. Mostly clear, with a low around 50. Northwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Union Grove, 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 24, 2026 12:25 AM CDT.
The active forecast window currently covers Aug 23 to Aug 30, 2026 for Union Grove, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 23 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 12:25 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union Grove
Wednesday looks like the warmest upcoming period in Union Grove at 83 degrees F.
Tonight is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 12:25 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy fog before 8am. Sunny, with a high near 77. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 54. West wind 0 to 5 mph.
Sunny, with a high near 80. Southwest wind 0 to 10 mph.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Southwest wind 10 to 15 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 61. West wind 5 to 10 mph. Chance of precipitation is 30%.
Sunny, with a high near 81. Northwest wind 5 to 10 mph.
Mostly clear, with a low around 59.
Sunny, with a high near 79.
Partly cloudy, with a low around 60.
A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Aug 23
|
Mostly Clear then Patchy Fog
|
50°F |
0 to 5 mph
NW
|
|
Monday
Aug 24
|
Patchy Fog then Sunny
|
77°F |
0 to 5 mph
NW
|
|
Monday Night
Aug 24
|
Mostly Clear
|
54°F |
0 to 5 mph
W
|
|
Tuesday
Aug 25
|
Sunny
|
80°F |
0 to 10 mph
SW
|
|
Tuesday Night
Aug 25
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
5 to 10 mph
S
|
|
Wednesday
Aug 26
|
Chance Showers And Thunderstorms
|
83°F |
10 to 15 mph
SW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms then Mostly Clear
|
61°F |
5 to 10 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
81°F |
5 to 10 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
59°F |
0 to 5 mph
NW
|
|
Friday
Aug 28
|
Sunny
|
79°F |
0 to 5 mph
NE
|
|
Friday Night
Aug 28
|
Partly Cloudy
|
60°F |
0 to 5 mph
SE
|
|
Saturday
Aug 29
|
Slight Chance Rain Showers
|
79°F |
0 to 10 mph
SE
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
S
|
|
Sunday
Aug 30
|
Chance Rain Showers
|
81°F |
5 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union Grove.