National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

36°F

2°C

Humidity 97%
Wind Speed NE 3 mph
Barometer 30.11 in (1019.7 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 9 Jan 10:54 pm CST
Extended Forecast for

2 Miles W Grafton IL

  • Tonight

    Tonight: Rain likely, mainly after 5am. Mostly cloudy, with a low around 38. Light and variable wind becoming northwest 5 to 7 mph after midnight. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 45. Northwest wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 45 °F

    Rain Likely
    then Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain before 8pm, then a slight chance of snow between 8pm and 10pm. Partly cloudy, with a low around 25. Northwest wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 36. Northwest wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 36 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. Southwest wind 5 to 7 mph.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain likely, mainly after 5am. Mostly cloudy, with a low around 38. Light and variable wind becoming northwest 5 to 7 mph after midnight. Chance of precipitation is 60%.
Saturday
Rain likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 45. Northwest wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Saturday Night
A slight chance of rain before 8pm, then a slight chance of snow between 8pm and 10pm. Partly cloudy, with a low around 25. Northwest wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 36. Northwest wind 6 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 27. Southwest wind 5 to 7 mph.
Monday
Sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 27.
Friday
Mostly cloudy, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Grafton IL
 38.98°N 90.47°W (Elev. 689 ft)
Last Update:
10:31 pm CST Jan 9, 2026
Forecast Valid:
11pm CST Jan 9, 2026-6pm CST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation