National Weather Service United States Department of Commerce

Unseasonably cold temperatures spreading into central U.S.

A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
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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 Cloudy

Mostly
Cloudy

Low: 40 °F

Friday

Breezy

Breezy

High: 48 °F

Friday
Night

Frost

Frost

Low: 27 °F

Saturday

Morning Frost

Morning
Frost

High: 47 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 30 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 53 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 40 °F

Monday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 62 °F

Monday
Night

Chance Showers Chance for Measurable Precipitation 50%

Chance
Showers

Low: 51 °F

Detailed Forecast

  • Overnight Mostly cloudy, with a low around 40. North wind 6 to 11 mph.
  • Friday Mostly cloudy, then gradually becoming sunny, with a high near 48. Breezy, with a north wind 16 to 20 mph, with gusts as high as 32 mph.
  • Friday Night Widespread frost after 10pm. Otherwise, mostly clear, with a low around 27. North wind 10 to 13 mph.
  • Saturday Widespread frost before 10am. Otherwise, sunny, with a high near 47. North wind 6 to 9 mph.
  • Saturday Night Mostly clear, with a low around 30. North wind around 5 mph becoming light and variable.
  • Sunday Mostly sunny, with a high near 53.
  • Sunday Night Partly cloudy, with a low around 40.
  • Monday A 20 percent chance of showers. Partly sunny, with a high near 62.
  • Monday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
  • Tuesday Showers likely and possibly a thunderstorm. Cloudy, with a high near 59. Chance of precipitation is 70%.
  • Tuesday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 46.
  • Wednesday A slight chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 20%.
  • Wednesday Night Partly cloudy, with a low around 43.
  • Thursday Sunny, with a high near 62.