Greenville, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Greenville, IL in one place.
Partly sunny, with a high near 56. Northwest wind 17 to 21 mph.
Local Weather Overview
This forecast page for Greenville, 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: Oct 15, 2026 11:24 AM CDT.
The active forecast window currently covers Oct 16 to Oct 21, 2026 for Greenville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 16 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 11:24 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Greenville
Wednesday looks like the warmest upcoming period in Greenville at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 17 to 21 mph NW.
The forecast from Oct 16 through Oct 21 stays mostly dry.
Forecast Details
- Last updated
- Oct 15, 2026 11:24 AM CDT
- 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 37. Northwest wind 8 to 18 mph.
Sunny, with a high near 60. North wind 1 to 8 mph.
Clear, with a low around 35.
Sunny, with a high near 67.
Mostly clear, with a low around 37.
Sunny, with a high near 73.
Partly cloudy, with a low around 40.
Mostly sunny, with a high near 74.
Mostly clear, with a low around 43.
Sunny, with a high near 76.
Mostly clear, with a low around 46.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Partly Sunny
|
56°F |
17 to 21 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
37°F |
8 to 18 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
60°F |
1 to 8 mph
N
|
|
Saturday Night
Oct 17
|
Clear
|
35°F |
1 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
1 to 6 mph
SE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
37°F |
0 to 3 mph
SE
|
|
Monday
Oct 19
|
Sunny
|
73°F |
2 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
40°F |
1 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
74°F |
1 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
43°F |
0 mph
|
|
Wednesday
Oct 21
|
Sunny
|
76°F |
0 to 3 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
46°F |
2 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Greenville.
Nearby forecast pages are not available for this location yet.
