East Alton, IL Weather Forecast
Local 7-day forecast
Patchy Frost then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for East Alton, IL in one place.
Patchy frost between 7am and 8am. Sunny, with a high near 63. Northeast wind 1 to 6 mph.
Local Weather Overview
This forecast page for East Alton, 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 17, 2026 8:14 AM CDT.
The active forecast window currently covers Oct 17 to Oct 23, 2026 for East Alton, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 17 to Oct 23, 2026
- Latest sync
- Oct 17, 2026 8:14 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in East Alton
Friday looks like the warmest upcoming period in East Alton at 85 degrees F.
Tonight is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Sunday at about 2 to 8 mph SE.
The forecast from Oct 17 through Oct 23 stays mostly dry.
Forecast Details
- Last updated
- Oct 17, 2026 8:14 AM CDT
- Coverage
- 7 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
Patchy frost after 4am. Clear, with a low around 37. East wind around 2 mph.
Patchy frost before 9am. Sunny, with a high near 68. Southeast wind 2 to 8 mph.
Clear, with a low around 39. Southeast wind 0 to 5 mph.
Sunny, with a high near 73. Southeast wind 0 to 3 mph.
Mostly clear, with a low around 42.
Sunny, with a high near 76.
Mostly clear, with a low around 45.
Sunny, with a high near 79.
Mostly clear, with a low around 48.
Sunny, with a high near 83.
Mostly clear, with a low around 51.
Sunny, with a high near 85.
Partly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 17
|
Patchy Frost then Sunny
|
63°F |
1 to 6 mph
NE
|
|
Tonight
Oct 17
|
Clear then Patchy Frost
|
37°F |
2 mph
E
|
|
Sunday
Oct 18
|
Patchy Frost then Sunny
|
68°F |
2 to 8 mph
SE
|
|
Sunday Night
Oct 18
|
Clear
|
39°F |
0 to 5 mph
SE
|
|
Monday
Oct 19
|
Sunny
|
73°F |
0 to 3 mph
SE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
42°F |
2 mph
E
|
|
Tuesday
Oct 20
|
Sunny
|
76°F |
0 to 3 mph
E
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
45°F |
2 mph
NE
|
|
Wednesday
Oct 21
|
Sunny
|
79°F |
0 to 3 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
48°F |
1 mph
SE
|
|
Thursday
Oct 22
|
Sunny
|
83°F |
0 to 3 mph
SE
|
|
Thursday Night
Oct 22
|
Mostly Clear
|
51°F |
2 mph
SE
|
|
Friday
Oct 23
|
Sunny
|
85°F |
1 to 6 mph
SE
|
|
Friday Night
Oct 23
|
Partly Cloudy
|
53°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around East Alton.