Union Grove, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union Grove, IL in one place.
Patchy fog before 9am. Sunny, with a high near 93. Heat index values as high as 102. Northwest wind 0 to 5 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: Jul 14, 2026 9:07 PM CDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Union Grove, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 14, 2026 9:07 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Union Grove
Wednesday looks like the warmest upcoming period in Union Grove at 93 degrees F.
Monday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph W.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 9:07 PM CDT
- Coverage
- 7 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
Partly cloudy, with a low around 72. Heat index values as high as 101. Southwest wind 0 to 5 mph.
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 93. Heat index values as high as 100. Southwest wind 0 to 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Sunny, with a high near 92. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 73. Chance of precipitation is 60%.
Sunny, with a high near 93.
Mostly clear, with a low around 70.
Sunny, with a high near 90.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 70.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90.
A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Patchy Fog then Sunny
|
93°F |
0 to 5 mph
NW
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
72°F |
0 to 5 mph
SW
|
|
Thursday
Jul 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
0 to 5 mph
SW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
0 to 5 mph
S
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
92°F |
5 mph
SW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
73°F |
5 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
93°F |
5 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
70°F |
5 to 10 mph
N
|
|
Sunday
Jul 19
|
Sunny
|
90°F |
5 mph
SE
|
|
Sunday Night
Jul 19
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
70°F |
5 mph
S
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
90°F |
5 to 15 mph
W
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
68°F |
5 to 10 mph
W
|
|
Tuesday
Jul 21
|
Slight Chance Rain Showers then Mostly Sunny
|
86°F |
5 to 15 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union Grove.