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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Partly Cloudy

67°F

19°C

Humidity 71%
Wind Speed SW 7 mph
Barometer 29.83 in (1009.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 Nov 1:53 am CST
Extended Forecast for

4 Miles SSW Troy IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Southwest wind around 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. North wind 3 to 7 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Light and variable wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Low around 46. Chance of precipitation is 80%.

    Low: 46 °F

    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Southwest wind around 10 mph.
Saturday
Mostly sunny, with a high near 78. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 43. North wind 7 to 11 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 59. North wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 36. Light and variable wind.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 58.
Monday Night
Showers before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Low around 46. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 45.
Wednesday
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 61.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Thursday
Rain and possibly a thunderstorm. High near 63. Chance of precipitation is 80%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Troy IL
 38.68°N 89.92°W (Elev. 574 ft)
Last Update:
1:31 am CST Nov 15, 2025
Forecast Valid:
2am CST Nov 15, 2025-6pm CST Nov 21, 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