Union Grove, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union Grove, IL in one place.
Partly sunny, with a high near 82. South wind 5 to 10 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for Union Grove, IL 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 27, 2026 9:35 PM CDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Union Grove, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 27, 2026 9:35 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Union Grove
Sunday looks like the warmest upcoming period in Union Grove at 90 degrees F.
Saturday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Sunday at about 10 to 15 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 9:35 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 68.
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 90.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 89. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73.
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 70.
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Partly Sunny
|
82°F |
5 to 10 mph
S
|
|
Saturday Night
Aug 29
|
Slight Chance Showers And Thunderstorms
|
68°F |
10 mph
S
|
|
Sunday
Aug 30
|
Slight Chance Showers And Thunderstorms
|
90°F |
10 to 15 mph
S
|
|
Sunday Night
Aug 30
|
Partly Cloudy then Chance Showers And Thunderstorms
|
73°F |
10 to 15 mph
S
|
|
Monday
Aug 31
|
Chance Showers And Thunderstorms
|
89°F |
10 mph
SW
|
|
Monday Night
Aug 31
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
73°F |
5 to 10 mph
S
|
|
Tuesday
Sep 1
|
Slight Chance Showers And Thunderstorms
|
88°F |
5 mph
SW
|
|
Tuesday Night
Sep 1
|
Partly Cloudy then Chance Showers And Thunderstorms
|
71°F |
5 mph
S
|
|
Wednesday
Sep 2
|
Chance Showers And Thunderstorms
|
88°F |
5 mph
SW
|
|
Wednesday Night
Sep 2
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
70°F |
5 mph
SE
|
|
Thursday
Sep 3
|
Slight Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union Grove.