Summerville, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Summerville, IL in one place.
Mostly sunny. High near 65, with temperatures falling to around 58 in the afternoon. West wind 6 to 20 mph, with gusts as high as 29 mph.
Local Weather Overview
This forecast page for Summerville, 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 10, 2026 2:59 AM CST.
The active forecast window currently covers Nov 11 to Nov 16, 2026 for Summerville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 11 to Nov 16, 2026
- Latest sync
- Nov 10, 2026 2:59 AM CST
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Summerville
Veterans Day looks like the warmest upcoming period in Summerville at 65 degrees F.
Friday Night is the coolest period ahead with temperatures near 23 degrees F.
The strongest winds are forecast for Veterans Day at about 6 to 20 mph W.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Nov 10, 2026 2:59 AM CST
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
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 39. Northwest wind 10 to 15 mph, with gusts as high as 24 mph.
A chance of rain showers after noon. Partly sunny. High near 48, with temperatures falling to around 43 in the afternoon.
Mostly clear, with a low around 29.
Sunny, with a high near 44.
Mostly clear, with a low around 23.
Sunny, with a high near 47.
Mostly clear, with a low around 28.
Mostly sunny, with a high near 51.
Partly cloudy, with a low around 34.
Mostly sunny, with a high near 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
65°F |
6 to 20 mph
W
|
|
Wednesday Night
Nov 11
|
Partly Cloudy
|
39°F |
10 to 15 mph
NW
|
|
Thursday
Nov 12
|
Partly Sunny then Chance Rain Showers
|
48°F |
10 to 16 mph
NW
|
|
Thursday Night
Nov 12
|
Mostly Clear
|
29°F |
6 to 12 mph
NW
|
|
Friday
Nov 13
|
Sunny
|
44°F |
7 to 12 mph
NW
|
|
Friday Night
Nov 13
|
Mostly Clear
|
23°F |
0 to 5 mph
NW
|
|
Saturday
Nov 14
|
Sunny
|
47°F |
2 mph
N
|
|
Saturday Night
Nov 14
|
Mostly Clear
|
28°F |
3 mph
E
|
|
Sunday
Nov 15
|
Mostly Sunny
|
51°F |
5 to 8 mph
SE
|
|
Sunday Night
Nov 15
|
Partly Cloudy
|
34°F |
6 mph
SE
|
|
Monday
Nov 16
|
Mostly Sunny
|
55°F |
6 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Summerville.