Union, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union, IL in one place.
Partly sunny. High near 48, with temperatures falling to around 45 in the afternoon. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Union, 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: Nov 6, 2026 8:12 AM CST.
The active forecast window currently covers Nov 6 to Nov 12, 2026 for Union, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 12, 2026
- Latest sync
- Nov 6, 2026 8:12 AM CST
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Union
Monday looks like the warmest upcoming period in Union at 64 degrees F.
Tonight is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Today at about 10 to 15 mph NNW.
The forecast from Nov 6 through Nov 12 stays mostly dry.
Forecast Details
- Last updated
- Nov 6, 2026 8:12 AM CST
- Coverage
- 8 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
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 31. Northwest wind 5 to 10 mph.
Mostly sunny. High near 50, with temperatures falling to around 45 in the afternoon. West northwest wind around 5 mph, with gusts as high as 15 mph.
Mostly clear, with a low around 34. West southwest wind around 5 mph, with gusts as high as 15 mph.
Sunny, with a high near 60. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 35.
Sunny, with a high near 64.
Mostly clear, with a low around 41.
Sunny, with a high near 62.
Mostly clear, with a low around 36.
Mostly sunny, with a high near 59.
Partly cloudy, with a low around 38.
Partly sunny, with a high near 54.
Partly cloudy, with a low around 36.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Nov 6
|
Partly Sunny
|
48°F |
10 to 15 mph
NNW
|
|
Tonight
Nov 6
|
Partly Cloudy
|
31°F |
5 to 10 mph
NW
|
|
Saturday
Nov 7
|
Mostly Sunny
|
50°F |
5 mph
WNW
|
|
Saturday Night
Nov 7
|
Mostly Clear
|
34°F |
5 mph
WSW
|
|
Sunday
Nov 8
|
Sunny
|
60°F |
5 to 10 mph
WSW
|
|
Sunday Night
Nov 8
|
Mostly Clear
|
35°F |
0 to 5 mph
W
|
|
Monday
Nov 9
|
Sunny
|
64°F |
0 to 10 mph
SW
|
|
Monday Night
Nov 9
|
Mostly Clear
|
41°F |
5 to 10 mph
WSW
|
|
Tuesday
Nov 10
|
Sunny
|
62°F |
0 to 5 mph
WNW
|
|
Tuesday Night
Nov 10
|
Mostly Clear
|
36°F |
0 mph
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
59°F |
0 to 5 mph
NNW
|
|
Wednesday Night
Nov 11
|
Partly Cloudy
|
38°F |
0 to 5 mph
N
|
|
Thursday
Nov 12
|
Partly Sunny
|
54°F |
5 to 10 mph
NNW
|
|
Thursday Night
Nov 12
|
Partly Cloudy
|
36°F |
5 mph
NNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union.