National Weather Service United States Department of Commerce

Severe storms and heavy rain possible from mid-South to Upstate New York on Tuesday

Thunderstorms are expected to develop along and ahead of a cold front from the Tennessee Valley to Upstate New York on Tuesday. The storms will be capable of producing damaging wind gusts and heavy rainfall that could lead to isolated flash flooding.
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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

Severe Thunderstorms Chance for Measurable Precipitation 90%

Severe
Thunderstorms

Low: 72 °F

Tuesday

Heavy Rain Chance for Measurable Precipitation 80%

Heavy
Rain

High: 86 °F

Tuesday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 69 °F

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 89 °F

Wednesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

Low: 72 °F

Thursday

Sunny

Sunny

High: 94 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 73 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 90 °F

Friday
Night

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

Low: 68 °F

Detailed Forecast

  • Overnight Showers and thunderstorms. Some storms could be severe, with large hail, damaging winds, and heavy rain. Low around 72. Calm wind becoming southwest around 5 mph. Chance of precipitation is 90%.
  • Tuesday Showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. High near 86. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 80%.
  • Tuesday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light south wind.
  • Wednesday A 40 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 89. South wind 3 to 8 mph.
  • Wednesday Night A 40 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. South wind 5 to 7 mph.
  • Thursday Sunny, with a high near 94.
  • Thursday Night Partly cloudy, with a low around 73.
  • Friday A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
  • Friday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
  • Saturday A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
  • Saturday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
  • Sunday Partly sunny, with a high near 78.
  • Sunday Night Partly cloudy, with a low around 56.
  • Monday Mostly sunny, with a high near 80.