National Weather Service United States Department of Commerce

Winter storm to bring heavy snow from the Plains to New England through Monday

A storm system in the central U.S. will push east setting the stage for a widespread precipitation event across the central and eastern U.S. through Monday. A wide swath of accumulating snow is forecast from Nebraska to New England. Just to the south of this area of snow, freezing rain is possible. Gusty winds and blowing snow could lead to blizzard conditions for parts of the Midwest.
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Hazardous Weather Conditions

Current Conditions

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2 Miles NW Cahokia IL

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

This
Afternoon

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

High: 45 °F

Tonight

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 17 °F

Monday

Decreasing Clouds

Decreasing
Clouds

High: 26 °F

Monday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 23 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 44 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 31 °F

Wednesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 37 °F

Wednesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 16 °F

Thursday

Partly Sunny

Partly
Sunny

High: 26 °F

Detailed Forecast

  • This Afternoon Rain likely. Cloudy, with a high near 45. Southwest wind 9 to 15 mph becoming west. Chance of precipitation is 70%.
  • Tonight A chance of rain and snow before 8pm, then a chance of snow. Cloudy, with a low around 17. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
  • Monday Cloudy, then gradually becoming mostly sunny, with a high near 26. Northwest wind 12 to 17 mph becoming light north in the afternoon. Winds could gust as high as 24 mph.
  • Monday Night Mostly cloudy, with a low around 23. Calm wind becoming south 5 to 7 mph after midnight.
  • Tuesday Mostly sunny, with a high near 44. South wind around 8 mph.
  • Tuesday Night Partly cloudy, with a low around 31.
  • Wednesday A 20 percent chance of snow. Partly sunny, with a high near 37.
  • Wednesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 16.
  • Thursday Partly sunny, with a high near 26.
  • Thursday Night Partly cloudy, with a low around 16.
  • Friday Mostly sunny, with a high near 37.
  • Friday Night Partly cloudy, with a low around 27.
  • Saturday Mostly sunny, with a high near 48.