Union Grove, WI Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union Grove, WI in one place.
Mostly sunny, with a high near 81.
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: May 21, 2026 4:09 PM CDT.
The active forecast window currently covers May 25 to May 27, 2026 for Union Grove, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 25 to May 27, 2026
- Latest sync
- May 21, 2026 4:09 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union Grove
Tuesday looks like the warmest upcoming period in Union Grove at 83 degrees F.
Monday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Memorial Day at about 0 to 10 mph S.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- May 21, 2026 4:09 PM CDT
- Coverage
- 3 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
Partly cloudy, with a low around 55.
Mostly sunny, with a high near 83.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy. Low around 56, with temperatures rising to around 61 overnight. Chance of precipitation is 20%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Mostly Sunny
|
81°F |
0 to 10 mph
S
|
|
Monday Night
May 25
|
Partly Cloudy
|
55°F |
0 to 5 mph
S
|
|
Tuesday
May 26
|
Mostly Sunny
|
83°F |
0 to 10 mph
S
|
|
Tuesday Night
May 26
|
Slight Chance Showers And Thunderstorms
|
56°F |
5 to 10 mph
SE
|
|
Wednesday
May 27
|
Chance Rain Showers
|
80°F |
5 to 10 mph
E
|
|
Wednesday Night
May 27
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
57°F |
5 to 10 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union Grove.