National Weather Service United States Department of Commerce

Unsettled weather in store for eastern U.S. into weekend

A complex weather system moving across the eastern U.S. will bring a variety of hazardous weather to the region into the weekend. Much colder weather is expected by Saturday, along with numerous showers and accumulating snow in the higher elevations of the Appalachians. Rain and snow will move into northern New England on Sunday.
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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

Patchy Frost

Patchy
Frost

Low: 31 °F

Saturday

Morning Frost

Morning
Frost

High: 47 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 28 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 52 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 37 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 67 °F

Monday
Night

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

Low: 49 °F

Tuesday

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

High: 58 °F

Tuesday
Night

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

Low: 42 °F

Detailed Forecast

  • Overnight Patchy frost. Otherwise, clear, with a steady temperature around 31. Northwest wind around 6 mph.
  • Saturday Patchy frost before 7am. Otherwise, sunny, with a high near 47. North wind around 7 mph.
  • Saturday Night Mostly clear, with a low around 28. Calm wind becoming southeast around 5 mph after midnight.
  • Sunday Mostly sunny, with a high near 52. South wind 6 to 10 mph.
  • Sunday Night Partly cloudy, with a low around 37. South wind 7 to 9 mph.
  • Monday Mostly sunny, with a high near 67.
  • Monday Night A 50 percent chance of rain after 1am. Mostly cloudy, with a low around 49.
  • Tuesday Rain likely and possibly a thunderstorm. Cloudy, with a high near 58. Chance of precipitation is 70%.
  • Tuesday Night A chance of rain. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
  • Wednesday Mostly sunny, with a high near 60.
  • Wednesday Night Mostly clear, with a low around 41.
  • Thursday Sunny, with a high near 56.
  • Thursday Night Mostly clear, with a low around 37.
  • Friday Mostly sunny, with a high near 55.