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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

76°F

24°C

Humidity 85%
Wind Speed S 5 mph
Barometer 29.91 in (1012.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 26 Jun 6:53 pm CDT
Extended Forecast for

5 Miles SSE Troy IL

Flood Watch June 26, 06:57pm until June 26, 10:00pm
Click here for hazard details and duration
...
  •  
    Flood Watch June 26, 06:57pm until June 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Tonight

    Low: 69 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly between midnight and 4am. Mostly cloudy, with a low around 72. Southeast wind 3 to 6 mph.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 110. South wind 6 to 11 mph.

    High: 93 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 69. South wind 3 to 7 mph. Chance of precipitation is 70%.
Saturday
A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly between midnight and 4am. Mostly cloudy, with a low around 72. Southeast wind 3 to 6 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 110. South wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Clear, with a low around 76.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 77.
Friday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Troy IL
 38.65°N 89.89°W (Elev. 499 ft)
Last Update:
5:41 pm CDT Jun 26, 2026
Forecast Valid:
6pm CDT Jun 26, 2026-6pm CDT Jul 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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