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

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed S 12 mph
Barometer 29.76 in (1006.7 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 27 Jul 9:54 pm CDT
Extended Forecast for

Eureka MO

Heat Advisory July 27, 10:02pm until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 27, 10:02pm until July 28, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Tonight

    Low: 78 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 102. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then
    Scattered
    T-storms

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 87. Light northeast wind.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Light east wind.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 78. Calm wind.
Tuesday
Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 102. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.
Tuesday Night
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 87. Light northeast wind.
Wednesday Night
Mostly clear, with a low around 66. Light east wind.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka MO
 38.5°N 90.66°W (Elev. 597 ft)
Last Update:
9:16 pm CDT Jul 27, 2026
Forecast Valid:
10pm CDT Jul 27, 2026-6pm CDT Aug 3, 2026
 
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