National Weather Service United States Department of Commerce

Rainfall and mountain snow will continue across the western U.S. into Monday

Heavy precipitation along the west coast will persist with a focus along the Coastal Ranges and Cascades. While not nearly as impressive as recent days, the forecast suggests another 1 to 3 inches of rainfall is possible across this region. Farther inland, moderate to heavy snow is likely over the Wasatch and Colorado Rockies with 1 to 2 foot amounts possible through Monday.
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Current Conditions

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Arnold MO

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Today

Rain Chance for Measurable Precipitation 90%

Rain

High: 51 °F

Tonight

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

Low: 41 °F

Tuesday

Mostly Cloudy

Mostly
Cloudy

High: 49 °F

Tuesday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 34 °F

Wednesday

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

High: 38 °F

Wednesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 31 °F

Christmas
Day

Mostly Sunny

Mostly
Sunny

High: 47 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 37 °F

Friday

Partly Sunny

Partly
Sunny

High: 48 °F

Detailed Forecast

  • Today Rain. High near 51. Southeast wind 9 to 11 mph. Chance of precipitation is 90%.
  • Tonight Rain likely, mainly before 8pm. Cloudy, with a low around 41. Southeast wind around 9 mph becoming southwest after midnight. Chance of precipitation is 60%.
  • Tuesday Mostly cloudy, with a high near 49. Southwest wind 8 to 11 mph.
  • Tuesday Night A chance of rain after midnight, mixing with snow after 4am. Cloudy, with a low around 34. Northwest wind 5 to 9 mph. Chance of precipitation is 40%.
  • Wednesday A chance of rain and snow before 9am, then a chance of snow. Cloudy, with a high near 38. Northwest wind 8 to 11 mph. Chance of precipitation is 50%.
  • Wednesday Night Mostly cloudy, with a low around 31.
  • Christmas Day Mostly sunny, with a high near 47.
  • Thursday Night Partly cloudy, with a low around 37.
  • Friday Partly sunny, with a high near 48.
  • Friday Night A slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
  • Saturday Mostly sunny, with a high near 36.
  • Saturday Night Partly cloudy, with a low around 26.
  • Sunday Mostly sunny, with a high near 39.