National Weather Service United States Department of Commerce

Flash flooding threat continues from the Great Basin across the southern Plains

The wet pattern in place will continue from the Great Basin across the central and southern Rockies into the southern Plains into Wednesday. Ample monsoonal moisture with a frontal boundary in place will allow for shower and thunderstorm development with locally heavy rainfall at times. The heavier showers could lead to flash flooding in some areas, especially urban areas and burn scars.
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Current Conditions

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3 Miles SSW Pontoon Beach IL

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Overnight

Mostly Clear

Mostly
Clear

Low: 61 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 82 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 61 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 84 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 64 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 82 °F

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 64 °F

Saturday

Mostly Sunny

Mostly
Sunny

High: 83 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 63 °F

Detailed Forecast

  • Overnight Mostly clear, with a low around 61. Calm wind.
  • Wednesday Mostly sunny, with a high near 82. Light and variable wind.
  • Wednesday Night Partly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.
  • Thursday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Light and variable wind.
  • Thursday Night Partly cloudy, with a low around 64. Light southeast wind.
  • Friday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
  • Friday Night Partly cloudy, with a low around 64.
  • Saturday Mostly sunny, with a high near 83.
  • Saturday Night Partly cloudy, with a low around 63.
  • Sunday Sunny, with a high near 85.
  • Sunday Night Mostly clear, with a low around 65.
  • Monday Sunny, with a high near 87.
  • Monday Night Mostly clear, with a low around 66.
  • Tuesday Mostly sunny, with a high near 88.