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Severe Weather and Flooding From Portions of the Plains to the Mid-Atlantic

A potent spring storm system with abundant moisture will bring a chance of significant severe weather and heavy rain today into tonight. Damaging winds, large hail, and a couple of tornadoes will be possible across the Tennessee Valley, middle Ohio Valley, and portions of the Mid-Atlantic. Heavy rain and flooding are possible from the Ozarks to the Tennessee Valley. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Mostly Cloudy

79°F

26°C

Humidity 67%
Wind Speed N 8 mph
Barometer 29.81 in (1009.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 27 May 2:53 pm CDT
Extended Forecast for

2 Miles NW Cahokia IL

Severe T-storm Watch until May 27, 09:00pm
Flood Warning until May 28, 03:00pm
Click here for hazard details and duration
Severe T-storm Watch
Flood Warning
  •  
    Severe T-storm Watch until May 27, 09:00pm
    Flood Warning until May 28, 03:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • This
    Afternoon

    This Afternoon: Scattered showers and thunderstorms. Some storms could be severe, with large hail and damaging winds.  Partly sunny, with a high near 88. Southeast wind around 7 mph.  Chance of precipitation is 40%.

    Severe
    Thunderstorms

    High: 88 °F

  • Tonight

    Tonight: Occasional showers and thunderstorms, mainly before midnight. Some storms could be severe, with large hail and damaging winds.  Low around 65. Southeast wind 5 to 8 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%.

    Severe
    Thunderstorms

    Low: 65 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before 1pm.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 79. West wind 6 to 9 mph.

    Chance
    T-storms and
    Patchy Fog

    High: 79 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 58. West wind 3 to 8 mph.

    Mostly Clear

    Low: 58 °F

  • Memorial
    Day

    Memorial Day: Sunny, with a high near 82. Light west wind increasing to 5 to 9 mph in the morning.

    Sunny

    High: 82 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 58.

    Partly Cloudy

    Low: 58 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Partly Cloudy

    Low: 59 °F

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Some storms could be severe, with large hail and damaging winds. Partly sunny, with a high near 88. Southeast wind around 7 mph. Chance of precipitation is 40%.
Tonight
Occasional showers and thunderstorms, mainly before midnight. Some storms could be severe, with large hail and damaging winds. Low around 65. Southeast wind 5 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 79. West wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 58. West wind 3 to 8 mph.
Memorial Day
Sunny, with a high near 82. Light west wind increasing to 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59.
Thursday
Partly sunny, with a high near 79.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 81.
Click Map For Forecast
Point Forecast:
2 Miles NW Cahokia IL
 38.57°N 90.21°W (Elev. 397 ft)
2:44 pm CDT May 27, 2017
3pm CDT May 27, 2017-6pm CDT Jun 3, 2017
 
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