National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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Foster City CA

7 Day Forecast

This
Afternoon

Mostly Cloudy

Mostly
Cloudy

High: 62 °F

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 54 °F

Monday

Partly Sunny

Partly
Sunny

High: 62 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 50 °F

Tuesday

Sunny

Sunny

High: 63 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 51 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 62 °F

Wednesday
Night

Slight Chance Rain

Slight Chc
Rain

Low: 50 °F

Christmas
Day

Sunny

Sunny

High: 60 °F

Detailed Forecast

  • This Afternoon Mostly cloudy, with a high near 62. West northwest wind around 11 mph.
  • Tonight Mostly cloudy, with a low around 54. West northwest wind 7 to 13 mph.
  • Monday Partly sunny, with a high near 62. North northwest wind 5 to 7 mph.
  • Monday Night Partly cloudy, with a low around 50. Northwest wind around 9 mph.
  • Tuesday Sunny, with a high near 63. Calm wind becoming north northeast around 6 mph in the morning.
  • Tuesday Night Partly cloudy, with a low around 51.
  • Wednesday Mostly sunny, with a high near 62.
  • Wednesday Night A slight chance of rain. Mostly cloudy, with a low around 50.
  • Christmas Day Sunny, with a high near 60.
  • Thursday Night Mostly clear, with a low around 46.
  • Friday Sunny, with a high near 60.
  • Friday Night Mostly clear, with a low around 47.
  • Saturday Sunny, with a high near 61.