National Weather Service United States Department of Commerce

Relatively quiet weather pattern over much of the U.S.

A quieter weather pattern will continue to set up for most of the U.S. as arctic air continues to surge southward behind a cold front sweeping across the Southeast U.S. Expect temperatures to be 10 to 30 degrees below climate averages from the southern Plains to the Northeast on Friday.
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Current Conditions

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Herculaneum MO

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Overnight

Mostly Clear

Mostly
Clear

Low: 10 °F

Friday

Sunny

Sunny

High: 39 °F

Friday
Night

Mostly Clear

Mostly
Clear

Low: 29 °F

Saturday

Sunny

Sunny

High: 54 °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: 30 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 54 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 30 °F

Detailed Forecast

  • Overnight Mostly clear, with a low around 10. Light southeast wind.
  • Friday Sunny, with a high near 39. South wind 5 to 11 mph, with gusts as high as 20 mph.
  • Friday Night Mostly clear, with a low around 29. Southwest wind 7 to 9 mph.
  • Saturday Sunny, with a high near 54. Southwest wind 8 to 10 mph.
  • Saturday Night Mostly clear, with a low around 30. West wind 3 to 7 mph.
  • Sunday Mostly sunny, with a high near 52.
  • Sunday Night Partly cloudy, with a low around 30.
  • Monday Mostly sunny, with a high near 54.
  • Monday Night Partly cloudy, with a low around 30.
  • Tuesday Sunny, with a high near 60.
  • Tuesday Night Mostly clear, with a low around 33.
  • Wednesday Sunny, with a high near 64.
  • Wednesday Night Mostly clear, with a low around 38.
  • Thursday Mostly sunny, with a high near 66.