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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San Bruno CA

7 Day Forecast

This
Afternoon

Mostly Cloudy

Mostly
Cloudy

High: 22 °C

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 15 °C

Saturday

Gradual Clearing

Gradual
Clearing

High: 23 °C

Saturday
Night

Patchy Fog

Patchy
Fog

Low: 15 °C

Sunday

Patchy Fog

Patchy
Fog

High: 22 °C

Sunday
Night

Patchy Fog

Patchy
Fog

Low: 15 °C

Labor
Day

Patchy Fog

Patchy
Fog

High: 23 °C

Monday
Night

Patchy Fog

Patchy
Fog

Low: 15 °C

Tuesday

Patchy Fog

Patchy
Fog

High: 22 °C

Detailed Forecast

  • This Afternoon Mostly cloudy, with a high near 22. West wind around 27 km/h, with gusts as high as 39 km/h.
  • Tonight Mostly cloudy, with a low around 15. West wind 24 to 32 km/h, with gusts as high as 42 km/h.
  • Saturday Cloudy through mid morning, then gradual clearing, with a high near 23. West wind 24 to 26 km/h, with gusts as high as 40 km/h.
  • Saturday Night Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 15. Breezy, with a west northwest wind 29 to 35 km/h, with gusts as high as 50 km/h.
  • Sunday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 22. West wind 18 to 21 km/h.
  • Sunday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 15.
  • Labor Day Patchy fog before 11am. Otherwise, partly sunny, with a high near 23.
  • Monday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 15.
  • Tuesday Patchy fog before 11am. Otherwise, partly sunny, with a high near 22.
  • Tuesday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 15.
  • Wednesday Patchy fog before 11am. Otherwise, partly sunny, with a high near 22.
  • Wednesday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 14.
  • Thursday Patchy fog before 11am. Otherwise, partly sunny, with a high near 22.