Alton, Illinois Weather
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Weather Forecast for Alton, Illinois : Madison County
Issued: 10:22 pm CST Feb 4, 2025 Latitude: 38.8906038 Longitude: -90.1842764 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
10% chance of  on Tonight 80% chance of thunderstorms on Wednesday 20% chance of rain on Thursday Mostly Sunny on Friday 70% chance of rain on Saturday Mostly Sunny on Sunday Partly Sunny on Monday 30% chance of snow on Tuesday
Low: 32°F High: 41°F High: 32°F High: 42°F High: 55°F High: 39°F High: 41°F High: 35°F
Low: 47 °F Low: 30°F Low: 35°F Low: 26°F Low: 23°F Low: 25°F  
Cloudy Thunderstorms Rain Mostly Sunny Rain Mostly Sunny Partly Sunny Snow
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Current Conditions at
ALTON - (KALN)
34°
Cloudy
as of 11:15 PM CST
Rel. Humidity: 74%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
8 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 3600ft
Current Conditions at
ST CHARLES - (KSET)
34°
Feels like 24°F
Cloudy
as of 10:54 PM CST
Rel. Humidity: 69%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.32 in.
Flight Rule: VFR
Wind Data
13 MPH
070° East
Cloud Level(s): Solid Overcast at 3600ft
Current Conditions at
ST LOUIS - (KSTL)
37°
Feels like 30°F
Cloudy
as of 10:51 PM CST
Rel. Humidity: 60%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
10 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 3500ft
Current Conditions at
EAST ST LOUIS - (KCPS)
37°
Cloudy
as of 10:53 PM CST
Rel. Humidity: 69%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
7 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 3500ft
10% chance of  Tonight Tonight... A slight chance of drizzle after 4am. Cloudy, with a low around 32. Northeast wind around 9 mph.

80% chance of thunderstorms Wednesday Wednesday... Drizzle likely before noon, then rain between noon and 3pm, then rain and possibly a thunderstorm after 3pm. High near 41. East wind 8 to 10 mph. Chance of precipitation is 80%.

80% chance of thunderstorms Wednesday Night Wednesday Night... Rain and possibly a thunderstorm before 9pm, then rain likely. Patchy fog before midnight. Temperature rising to around 47 by 2am. Southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 80%.

20% chance of rain Thursday Thursday... A 20 percent chance of rain before noon. Partly sunny, with a steady temperature around 48. Northwest wind 7 to 11 mph.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 30. Northwest wind around 6 mph.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 42.

80% chance of rain Friday Night Friday Night... Rain, mainly after midnight. Low around 35. Chance of precipitation is 80%.

70% chance of rain Saturday Saturday... Rain likely, mainly before noon. Mostly cloudy, with a high near 55. Chance of precipitation is 70%.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 26.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 39.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 23.

Partly Sunny on Monday Monday... Partly sunny, with a high near 41.

30% chance of snow Monday Night Monday Night... A 30 percent chance of snow. Mostly cloudy, with a low around 25.

30% chance of snow Tuesday Tuesday... A 30 percent chance of snow. Mostly cloudy, with a high near 35.

Current Radar Image


Sun Almanac for Alton, Illinois
Sunrise: 07:03 AM
Sunset: 5:27 PM
Civil Sunrise:06:35 AM
Civil Sunset: 5:55 PM
Nautical Sunrise: 06:03 AM
Nautical Sunset: 6:26 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:58 PM
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