National Weather Service United States Department of Commerce

The flash flooding threat shifts slightly east on Friday while both coasts and Hawaii continue high surf issues due to tropical systems

The potential for heavy rainfall and flash flooding will shift east on Friday across parts of the Upper Midwest into the eastern Great Lakes. Meanwhile, portions of both the East and West Coasts, as well as Hawaii, will continue to have high surf and rip current potential due to Hurricane Cristobal and Tropical Storm Marie respectively. Caution should be used on area beaches.
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Current Conditions

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4 Miles SSW Saint Helena CA

7 Day Forecast

Tonight

Mostly Clear

Mostly
Clear

Low: 57 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 80 °F

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 56 °F

Saturday

Sunny

Sunny

High: 80 °F

Saturday
Night

Clear

Clear

Low: 57 °F

Sunday

Sunny

Sunny

High: 80 °F

Sunday
Night

Clear

Clear

Low: 56 °F

Labor
Day

Sunny

Sunny

High: 80 °F

Monday
Night

Clear

Clear

Low: 56 °F

Detailed Forecast

  • Tonight Mostly clear, with a low around 57. Northwest wind 5 to 7 mph.
  • Friday Mostly sunny, with a high near 80. West southwest wind 5 to 10 mph.
  • Friday Night Partly cloudy, with a low around 56. West wind 7 to 9 mph.
  • Saturday Sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon.
  • Saturday Night Clear, with a low around 57. West northwest wind 5 to 10 mph becoming north in the evening.
  • Sunday Sunny, with a high near 80.
  • Sunday Night Clear, with a low around 56.
  • Labor Day Sunny, with a high near 80.
  • Monday Night Clear, with a low around 56.
  • Tuesday Sunny, with a high near 77.
  • Tuesday Night Clear, with a low around 54.
  • Wednesday Sunny, with a high near 75.
  • Wednesday Night Clear, with a low around 54.
  • Thursday Sunny, with a high near 76.