Vandalia, Illinois Weather
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Click for Hazardous Weather Outlook for Vandalia, Illinois
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Weather Forecast for Vandalia, Illinois : Fayette County
Issued: 2:21 am CDT Sep 16, 2025 Latitude: 38.960601 Longitude: -89.0936778 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Clear on Overnight Sunny on Tuesday Sunny on Wednesday Sunny on Thursday 20% chance of on Friday 30% chance of thunderstorms on Saturday 30% chance of on Sunday 30% chance of thunderstorms on Monday
Low: 62°F High: 92°F High: 92°F High: 93°F High: 88°F High: 84°F High: 85°F High: 85°F
Low: 59°F Low: 60°F Low: 63°F Low: 62°F Low: 62°F Low: 63°F  
Clear Sunny Sunny Sunny Partly Sunny Thunderstorms Partly Sunny Thunderstorms
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Current Conditions at
SALEM-LECKRONE ARPT - (KSLO)
72°
Clear
as of 2:55 AM CDST
Rel. Humidity: 73%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
3 MPH
070° East
Cloud Level(s): Clear
Current Conditions at
CENTRALIA MUNICIPAL ARPT - (KENL)
64°
Clear
as of 2:55 AM CDST
Rel. Humidity: 82%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
EFFINGHAM COUNTY MEMORIAL - (K1H2)
68°
Clear
as of 2:55 AM CDST
Rel. Humidity: 77%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
LITCHFIELD MUNI ARP - (K3LF)
68°
Clear
as of 2:55 AM CDST
Rel. Humidity: 72%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
5 MPH
090° East
Cloud Level(s): Clear
Clear on Overnight Overnight... Clear, with a low around 62. Calm wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 92. Northeast wind 3 to 6 mph.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 59. Northeast wind around 6 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 92. Light northeast wind.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 60. Calm wind.
Sunny on Thursday Thursday... Sunny, with a high near 93.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 63.
20% chance of Friday Friday... A 20 percent chance of showers. Partly sunny, with a high near 88.
40% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
30% chance of thunderstorms Saturday Saturday... A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
20% chance of thunderstorms Saturday Night Saturday Night... A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
30% chance of Sunday Sunday... A 30 percent chance of showers. Partly sunny, with a high near 85.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Current Radar Image


Sun Almanac for Vandalia, Illinois
Sunrise: 06:39 AM
Sunset: 7:03 PM
Civil Sunrise:06:12 AM
Civil Sunset: 7:30 PM
Nautical Sunrise: 05:41 AM
Nautical Sunset: 8:01 PM
Astro Sunrise: 05:09 AM
Astro Sunset: 8:33 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.