National Weather Service United States Department of Commerce

Flash flooding possible for parts of Upper Midwest

A slow-moving weather system progressing from the northern Plains to the Great Lakes will bring excessive rainfall and a risk of flash flooding to portions of the Upper Midwest on Friday. The heaviest rainfall is expected from central Iowa northeastward across southeastern Minn. and into Wisc. Rainfall totals of 1-2 inches, with locally-higher amounts, are possible through Saturday morning.
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Current Conditions

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Foster City CA

7 Day Forecast

Today

Patchy Fog

Patchy
Fog

High: 72 °F

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 60 °F

Saturday

Decreasing Clouds

Decreasing
Clouds

High: 73 °F

Saturday
Night

Patchy Fog

Patchy
Fog

Low: 60 °F

Sunday

Patchy Fog

Patchy
Fog

High: 72 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 60 °F

Labor
Day

Mostly Sunny

Mostly
Sunny

High: 73 °F

Monday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 60 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 72 °F

Detailed Forecast

  • Today Patchy fog before 11am. Otherwise, partly sunny, with a high near 72. Light and variable wind becoming west 6 to 11 mph in the afternoon.
  • Tonight Mostly cloudy, with a low around 60. West wind 7 to 13 mph.
  • Saturday Mostly cloudy, then gradually becoming sunny, with a high near 73. West northwest wind 9 to 13 mph, with gusts as high as 20 mph.
  • Saturday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 60. West wind around 21 mph, with gusts as high as 28 mph.
  • Sunday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 72. Northwest wind 9 to 14 mph.
  • Sunday Night Mostly cloudy, with a low around 60.
  • Labor Day Mostly sunny, with a high near 73.
  • Monday Night Mostly cloudy, with a low around 60.
  • Tuesday Mostly sunny, with a high near 72.
  • Tuesday Night Mostly cloudy, with a low around 60.
  • Wednesday Mostly sunny, with a high near 72.
  • Wednesday Night Mostly cloudy, with a low around 59.
  • Thursday Mostly sunny, with a high near 71.