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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Collinsville IL

7 Day Forecast

For More Weather Information:

Saint Louis, MO Local Forecast Office

Overnight

Heavy Rain Chance for Measurable Precipitation 90%

Heavy
Rain

Low: 70 °F

Tuesday

Heavy Rain Chance for Measurable Precipitation 90%

Heavy
Rain

High: 85 °F

Tuesday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 68 °F

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 88 °F

Wednesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

Low: 72 °F

Thursday

Sunny

Sunny

High: 93 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 72 °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: 67 °F

Detailed Forecast

  • Overnight Showers and thunderstorms. Some of the storms could produce heavy rainfall. Low around 70. South wind around 6 mph. Chance of precipitation is 90%.
  • Tuesday Showers and thunderstorms before 8am, then a chance of showers between 8am and 11am. Some of the storms could produce heavy rainfall. High near 85. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 90%.
  • Tuesday Night A 20 percent chance of showers and thunderstorms after 2am. Mostly clear, with a low around 68. Northwest wind around 5 mph becoming calm in the evening.
  • Wednesday A 40 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 88. Light southeast wind becoming south 5 to 10 mph in the morning.
  • Wednesday Night A 40 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. South wind 6 to 9 mph.
  • Thursday Sunny, with a high near 93.
  • Thursday Night Partly cloudy, with a low around 72.
  • Friday A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
  • Friday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
  • Saturday A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
  • Saturday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
  • Sunday Mostly sunny, with a high near 77.
  • Sunday Night Partly cloudy, with a low around 56.
  • Monday Mostly sunny, with a high near 78.