National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. on Saturday

Another Pacific system will impact the West Coast today. Heavy rainfall could lead to flash flooding, river and small stream flooding as well as mudslides and debris flows, especially over burn scars. Strong winds and heavy elevation 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

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 33 °F

Sunday

Partly Sunny

Partly
Sunny

High: 46 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 36 °F

Monday

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

High: 51 °F

Monday
Night

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

Low: 43 °F

Tuesday

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

High: 46 °F

Tuesday
Night

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

Low: 31 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 36 °F

Wednesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 29 °F

Detailed Forecast

  • Tonight Mostly cloudy, with a low around 33. South wind around 6 mph.
  • Sunday Partly sunny, with a high near 46. South wind 5 to 9 mph.
  • Sunday Night Mostly cloudy, with a low around 36. Southeast wind around 8 mph.
  • Monday A 50 percent chance of rain after 7am. Cloudy, with a high near 51. South wind 9 to 13 mph, with gusts as high as 22 mph.
  • Monday Night Rain likely, mainly after 7pm. Cloudy, with a low around 43. South wind 5 to 10 mph. Chance of precipitation is 60%.
  • Tuesday Rain likely, mainly before 7am. Cloudy, with a high near 46. Chance of precipitation is 60%.
  • Tuesday Night A chance of rain before 8pm, then a chance of rain and snow between 8pm and 1am, then a chance of snow after 1am. Cloudy, with a low around 31. Chance of precipitation is 50%.
  • Wednesday A 50 percent chance of snow. Mostly cloudy, with a high near 36.
  • Wednesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 29.
  • Christmas Day Mostly sunny, with a high near 43.
  • Thursday Night Mostly cloudy, with a low around 34.
  • Friday A chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 30%.
  • Friday Night A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
  • Saturday A 20 percent chance of snow. Mostly sunny, with a high near 35.