Alton, Illinois Weather
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Weather Forecast for Alton, Illinois : Madison County
Issued: 5:22 am CDT Apr 30, 2024 Latitude: 38.8906038 Longitude: -90.1842764 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Morning Fog on Today 40% chance of thunderstorms on Tonight 20% chance of thunderstorms on Wednesday 50% chance of thunderstorms on Thursday 60% chance of thunderstorms on Friday 30% chance of thunderstorms on Saturday 30% chance of thunderstorms on Sunday 40% chance of thunderstorms on Monday
High: 82°F Low: 62°F High: 83°F High: 86°F High: 77°F High: 79°F High: 78°F High: 79°F
Low: 64°F Low: 63°F Low: 56°F Low: 58°F Low: 60°F  
Morning Fog Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
ALTON - (KALN)
52°
Clear
as of 6:15 AM CDST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 7 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
54°
Clear
Mist
as of 6:21 AM CDST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 4 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
57°
Mostly Clear
as of 5:51 AM CDST
Rel. Humidity: 82%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 25000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
54°
Clear
Fog
as of 6:20 AM CDST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: Less than 1/4 Miles
Pressure: 29.95 in.
Flight Rule: LIFR
Wind Data
Calm
Morning Fog on Today Today... Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light southeast wind becoming south 5 to 10 mph in the morning.
40% chance of thunderstorms Tonight Tonight... A 40 percent chance of showers and thunderstorms, mainly between 2am and 5am. Increasing clouds, with a low around 62. Southeast wind 7 to 13 mph.
20% chance of thunderstorms Wednesday Wednesday... A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 83. Southwest wind 5 to 8 mph becoming northeast in the afternoon.
20% chance of thunderstorms Wednesday Night Wednesday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East wind around 8 mph.
50% chance of thunderstorms Thursday Thursday... A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 86. South wind 8 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.
80% chance of thunderstorms Thursday Night Thursday Night... Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
60% chance of thunderstorms Friday Friday... Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 60%.
30% chance of rain Friday Night Friday Night... A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 56.
30% chance of thunderstorms Saturday Saturday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
30% chance of thunderstorms Saturday Night Saturday Night... A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
30% chance of thunderstorms Sunday Sunday... A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
20% chance of thunderstorms Sunday Night Sunday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
40% chance of thunderstorms Monday Monday... A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Current Radar Image


Sun Almanac for Alton, Illinois
Sunrise: 06:03 AM
Sunset: 7:53 PM
Civil Sunrise:05:34 AM
Civil Sunset: 8:21 PM
Nautical Sunrise: 04:59 AM
Nautical Sunset: 8:56 PM
Astro Sunrise: 04:22 AM
Astro Sunset: 9:34 PM
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