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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Saint Charles MO

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Today

Breezy

Breezy

High: 45 °F

Tonight

Frost

Frost

Low: 26 °F

Saturday

Morning Frost

Morning
Frost

High: 47 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 30 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 52 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 41 °F

Monday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 63 °F

Monday
Night

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

Low: 51 °F

Tuesday

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

High: 59 °F

Detailed Forecast

  • Today Mostly cloudy early, then gradual clearing, with a high near 45. Breezy, with a north wind 15 to 24 mph, with gusts as high as 34 mph.
  • Tonight Widespread frost after 11pm. Otherwise, clear, with a low around 26. North wind 9 to 18 mph, with gusts as high as 26 mph.
  • Saturday Widespread frost before 11am. Otherwise, sunny, with a high near 47. North wind 5 to 7 mph.
  • Saturday Night Mostly clear, with a low around 30. Light and variable wind becoming southeast around 6 mph after midnight.
  • Sunday Mostly sunny, with a high near 52. South wind 7 to 11 mph.
  • Sunday Night Partly cloudy, with a low around 41.
  • Monday A 20 percent chance of showers after 8am. Partly sunny, with a high near 63.
  • Monday Night Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
  • Tuesday Showers likely and possibly a thunderstorm. Cloudy, with a high near 59. Chance of precipitation is 70%.
  • Tuesday Night Showers likely and possibly a thunderstorm. Cloudy, with a low around 48. Chance of precipitation is 70%.
  • Wednesday Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.
  • Wednesday Night A 30 percent chance of showers. Partly cloudy, with a low around 45.
  • Thursday Mostly sunny, with a high near 60.