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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

47°F

8°C

Humidity 94%
Wind Speed SE 6 mph
Barometer 30.11 in
Dewpoint 46°F (8°C)
Visibility 3.00 mi
Wind Chill44°F (7°C)
Last update 20 Nov 5:35 am CST
Extended Forecast for

3 Miles N Troy IL

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a low around 45. Light southeast wind.

    Low: 45 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A chance of rain before 2pm, then a slight chance of rain after 3pm. Patchy fog between 7am and 10am. Otherwise, cloudy, with a high near 57. Southeast wind 5 to 8 mph. Chance of precipitation is 30%.

    High: 57 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Rain likely, then rain and possibly a thunderstorm after 3am. Patchy fog after 8pm. Low around 52. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Chance Rain
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. Patchy fog before 1pm. High near 63. East wind 5 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 90%.

    High: 63 °F

    Rain and
    Patchy Fog

  • Friday Night

    Friday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 44. North wind 6 to 8 mph.

    Low: 44 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a low around 45. Light southeast wind.
Thursday
A chance of rain before 2pm, then a slight chance of rain after 3pm. Patchy fog between 7am and 10am. Otherwise, cloudy, with a high near 57. Southeast wind 5 to 8 mph. Chance of precipitation is 30%.
Thursday Night
Rain likely, then rain and possibly a thunderstorm after 3am. Patchy fog after 8pm. Low around 52. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.
Friday
Rain and possibly a thunderstorm. Patchy fog before 1pm. High near 63. East wind 5 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 90%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 44. North wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 42.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 58.
Monday Night
Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Troy IL
 38.79°N 89.88°W (Elev. 551 ft)
Last Update:
4:51 am CST Nov 20, 2025
Forecast Valid:
5am CST Nov 20, 2025-6pm CST Nov 26, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation