National Weather Service United States Department of Commerce

Arctic air to drop temperatures across the northern Plain and northern Rockies; will bring snow to the Intermountain West

An arctic front is forecast to plunge through the northern Plains and northern Rockies on Saturday bringing a drastic drop in temperatures across these areas with a burst of snow over much of the Intermountain Region. Arctic air will also filter into the Pacific Northwest bringing with it snow showers and subfreezing low temperatures.
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Current Conditions

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4 Miles SE Keyesport IL

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Overnight

Mostly Cloudy

Mostly
Cloudy

Low: 38 °F

Saturday

Mostly Cloudy

Mostly
Cloudy

High: 57 °F

Saturday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 51 °F

Sunday

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

High: 63 °F

Sunday
Night

Chance Freezing Rain Chance for Measurable Precipitation 30%

Chance
Freezing Rain

Low: 26 °F

Monday

Slight Chance Freezing Rain Chance for Measurable Precipitation 20%

Slight Chance
Freezing Rain

High: 32 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 22 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 39 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 31 °F

Detailed Forecast

  • Overnight Mostly cloudy, with a low around 38. South wind around 14 mph.
  • Saturday Mostly cloudy, with a high near 57. South wind 13 to 15 mph.
  • Saturday Night Mostly cloudy, with a low around 51. South wind 11 to 13 mph.
  • Sunday A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 63. South wind 10 to 15 mph becoming west in the afternoon.
  • Sunday Night A chance of rain before 2am, then a chance of freezing rain. Mostly cloudy, with a low around 26. North wind 10 to 14 mph. Chance of precipitation is 30%.
  • Monday A slight chance of freezing rain. Partly sunny, with a high near 32. Chance of precipitation is 20%.
  • Monday Night Partly cloudy, with a low around 22.
  • Tuesday Mostly sunny, with a high near 39.
  • Tuesday Night Mostly cloudy, with a low around 31.
  • Wednesday Mostly sunny, with a high near 45.
  • Wednesday Night A slight chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
  • Thursday A 30 percent chance of rain. Mostly cloudy, with a high near 47.
  • Thursday Night A chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
  • Friday A 20 percent chance of rain. Mostly cloudy, with a high near 47.