National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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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

This
Afternoon

Cloudy

Cloudy

High: 44 °F

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 38 °F

Monday

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

High: 50 °F

Monday
Night

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

Low: 43 °F

Tuesday

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

High: 48 °F

Tuesday
Night

Rain/Snow Likely Chance for Measurable Precipitation 60%

Rain/Snow
Likely

Low: 33 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 36 °F

Wednesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 29 °F

Christmas
Day

Mostly Sunny

Mostly
Sunny

High: 45 °F

Detailed Forecast

  • This Afternoon Cloudy, with a high near 44. South wind around 9 mph.
  • Tonight Mostly cloudy, with a low around 38. Southeast wind around 10 mph.
  • Monday A 50 percent chance of rain. Cloudy, with a high near 50. South wind 10 to 13 mph.
  • Monday Night Rain likely. Cloudy, with a low around 43. South wind 6 to 11 mph becoming west after midnight. Chance of precipitation is 70%.
  • Tuesday A 40 percent chance of rain. Cloudy, with a high near 48. Light west wind increasing to 5 to 9 mph in the morning.
  • Tuesday Night Rain likely before 2am, then rain and snow likely. Cloudy, with a low around 33. Chance of precipitation is 60%.
  • Wednesday A 50 percent chance of snow. Cloudy, with a high near 36.
  • Wednesday Night Mostly cloudy, with a low around 29.
  • Christmas Day Mostly sunny, with a high near 45.
  • Thursday Night Mostly cloudy, with a low around 36.
  • Friday A 20 percent chance of rain. Partly sunny, with a high near 45.
  • Friday Night A slight chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
  • Saturday Mostly sunny, with a high near 36.