National Weather Service United States Department of Commerce

Severe weather expected for Upper Midwest on Wednesday

A potent storm system will bring a chance of severe thunderstorms to parts of the Upper Midwest on Wednesday and Wednesday night. Very large hail, damaging wind gusts, tornadoes and heavy rain are possible with these storms.
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Hazardous Weather Conditions

Current Conditions

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Saint Louis MO

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Tonight

Areas Fog

Areas
Fog

Low: 69 °F

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 88 °F

Wednesday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 73 °F

Thursday

Mostly Sunny

Mostly
Sunny

High: 94 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 74 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 90 °F

Friday
Night

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

Low: 66 °F

Saturday

Mostly Cloudy

Mostly
Cloudy

High: 77 °F

Saturday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 58 °F

Detailed Forecast

  • Tonight Areas of fog after 3am. Otherwise, mostly clear, with a low around 69. Calm wind.
  • Wednesday A 40 percent chance of showers and thunderstorms, mainly after 2pm. Areas of fog before 7am. Otherwise, increasing clouds, with a high near 88. Calm wind becoming southeast 5 to 9 mph in the morning.
  • Wednesday Night A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. South wind around 7 mph.
  • Thursday Mostly sunny, with a high near 94. Heat index values as high as 103. South wind 7 to 11 mph.
  • Thursday Night Partly cloudy, with a low around 74. South wind 6 to 8 mph.
  • Friday A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
  • Friday Night Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
  • Saturday Mostly cloudy, with a high near 77.
  • Saturday Night Mostly cloudy, with a low around 58.
  • Sunday Mostly sunny, with a high near 77.
  • Sunday Night Mostly clear, with a low around 57.
  • Monday Mostly sunny, with a high near 80.
  • Monday Night Mostly cloudy, with a low around 63.
  • Tuesday A 30 percent chance of showers. Mostly cloudy, with a high near 82.