National Weather Service United States Department of Commerce

Wet weather continues across Pacific Northwest and New England

Two developing storm systems will bring heavy rain to opposite coasts of the U.S. on Wednesday, one affecting the Pacific Northwest and northern California and the other New England. There is a risk of flash flooding across both areas, with 2-4 inches of rainfall, with isolated higher amounts, possible by Thursday morning.
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Current Conditions

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4 Miles S Portola Valley CA

7 Day Forecast

Today

Mostly Sunny

Mostly
Sunny

High: 69 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 51 °F

Thursday

Slight Chance Rain Chance for Measurable Precipitation 20%

Slight Chc
Rain

High: 71 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 52 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 71 °F

Friday
Night

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

Low: 51 °F

Saturday

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

High: 64 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 47 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 64 °F

Detailed Forecast

  • Today Mostly sunny, with a high near 69. Northwest wind around 6 mph.
  • Tonight Partly cloudy, with a low around 51. West northwest wind 5 to 7 mph becoming calm in the evening.
  • Thursday A 20 percent chance of rain after 11am. Partly sunny, with a high near 71. Calm wind becoming west around 6 mph in the afternoon.
  • Thursday Night Partly cloudy, with a low around 52. Light and variable wind becoming northeast 5 to 7 mph after midnight.
  • Friday Mostly sunny, with a high near 71. Northeast wind 5 to 9 mph becoming calm in the morning.
  • Friday Night A 50 percent chance of rain. Mostly cloudy, with a low around 51.
  • Saturday A 40 percent chance of showers. Partly sunny, with a high near 64.
  • Saturday Night Partly cloudy, with a low around 47.
  • Sunday Mostly sunny, with a high near 64.
  • Sunday Night Mostly clear, with a low around 47.
  • Monday Sunny, with a high near 66.
  • Monday Night Mostly clear, with a low around 49.
  • Tuesday Mostly sunny, with a high near 68.