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Severe thunderstorms possible from the upper Midwest to the lower Mississippi Valley

Severe thunderstorms with damaging winds, a few tornadoes and some hail are expected across much of Arkansas and southern Missouri Wednesday. Isolated severe thunderstorms with damaging wind are also expected across Illinois during the day and across the lower Mississippi Valley overnight. Heavy rain with localized flooding is also possible in these areas. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis, Lambert-St. Louis International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

24°C

76°F

Humidity 39%
Wind Speed S 20 km/h
Barometer 998.8 mb (29.52 in)
Dewpoint 9°C (49°F)
Visibility 16 km
Heat Index26°C (78°F)
Last update 25 Apr 8:51 pm CDT
Extended Forecast for

Saint Louis MO

  • Tonight

    Tonight: Increasing clouds, with a low around 18. South wind 13 to 21 km/h, with gusts as high as 35 km/h.

    Increasing
    Clouds

    Low: 18 °C

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall.  Cloudy, with a high near 24. South wind 11 to 16 km/h, with gusts as high as 32 km/h.  Chance of precipitation is 60%.

    Slight Chance
    T-storms then
    Heavy Rain

    High: 24 °C

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Some of the storms could produce heavy rainfall.  Low around 9. South wind 10 to 14 km/h becoming northwest in the evening.  Chance of precipitation is 90%.

    Heavy Rain

    Low: 9 °C

  • Thursday

    Thursday: Showers likely, mainly before 8am.  Cloudy, then gradually becoming mostly sunny, with a high near 18. West wind 11 to 14 km/h.  Chance of precipitation is 60%.

    Showers
    Likely then
    Slight Chance
    Showers

    High: 18 °C

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers after 2am.  Mostly cloudy, with a low around 11. South wind 5 to 8 km/h becoming calm.

    Mostly Cloudy
    then Chance
    Showers

    Low: 11 °C

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm.  Cloudy, with a high near 23. Chance of precipitation is 50%.

    Chance
    Showers

    High: 23 °C

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am.  Low around 14. Chance of precipitation is 80%.

    Chance
    Showers then
    Showers

    Low: 14 °C

  • Saturday

    Saturday: Showers and possibly a thunderstorm.  High near 22. Chance of precipitation is 80%.

    Showers

    High: 22 °C

  • Saturday
    Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 16. Chance of precipitation is 80%.

    Showers

    Low: 16 °C

Detailed Forecast

Tonight
Increasing clouds, with a low around 18. South wind 13 to 21 km/h, with gusts as high as 35 km/h.
Wednesday
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 24. South wind 11 to 16 km/h, with gusts as high as 32 km/h. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Some of the storms could produce heavy rainfall. Low around 9. South wind 10 to 14 km/h becoming northwest in the evening. Chance of precipitation is 90%.
Thursday
Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 18. West wind 11 to 14 km/h. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 11. South wind 5 to 8 km/h becoming calm.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 23. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 14. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm. High near 22. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 16. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Cloudy, with a high near 21. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 8.
Monday
Partly sunny, with a high near 17.
Monday Night
Partly cloudy, with a low around 9.
Tuesday
Mostly sunny, with a high near 23.
Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 164 m)
7:58 pm CDT Apr 25, 2017
9pm CDT Apr 25, 2017-6pm CDT May 2, 2017
 
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