Bethalto, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Bethalto, IL in one place.
Partly sunny, with a high near 80. East wind around 7 mph.
Local Weather Overview
This forecast page for Bethalto, 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: May 28, 2026 12:02 AM CDT.
The active forecast window currently covers May 29 to Jun 3, 2026 for Bethalto, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 29 to Jun 3, 2026
- Latest sync
- May 28, 2026 12:02 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Bethalto
Monday looks like the warmest upcoming period in Bethalto at 83 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 10 mph NE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- May 28, 2026 12:02 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
Mostly cloudy, with a low around 61. East wind 2 to 6 mph.
Mostly sunny, with a high near 82.
Partly cloudy, with a low around 61.
Mostly sunny, with a high near 81.
Partly cloudy, with a low around 61.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 60. Chance of precipitation is 20%.
Sunny, with a high near 82.
Clear, with a low around 58.
Sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 29
|
Partly Sunny
|
80°F |
7 mph
E
|
|
Friday Night
May 29
|
Mostly Cloudy
|
61°F |
2 to 6 mph
E
|
|
Saturday
May 30
|
Mostly Sunny
|
82°F |
3 to 7 mph
E
|
|
Saturday Night
May 30
|
Partly Cloudy
|
61°F |
7 mph
E
|
|
Sunday
May 31
|
Mostly Sunny
|
81°F |
7 mph
E
|
|
Sunday Night
May 31
|
Partly Cloudy
|
61°F |
2 to 7 mph
E
|
|
Monday
Jun 1
|
Mostly Sunny then Slight Chance Rain Showers
|
83°F |
2 to 8 mph
NE
|
|
Monday Night
Jun 1
|
Slight Chance Rain Showers then Partly Cloudy
|
60°F |
3 to 8 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
82°F |
5 to 10 mph
NE
|
|
Tuesday Night
Jun 2
|
Clear
|
58°F |
3 to 9 mph
NE
|
|
Wednesday
Jun 3
|
Sunny
|
82°F |
3 to 8 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Bethalto.
