National Weather Service United States Department of Commerce

Severe weather expected for Upper Midwest on Wednesday

A potent storm system will bring a chance of severe thunderstorms to parts of the Upper Midwest on Wednesday and Wednesday night. Very large hail, damaging wind gusts, tornadoes and heavy rain are possible with these storms.
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Current Conditions

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San Bruno CA

7 Day Forecast

Overnight

Chance Drizzle

Chance
Drizzle

Low: 14 °C

Wednesday

Chance Drizzle

Chance
Drizzle

High: 22 °C

Wednesday
Night

Chance Drizzle

Chance
Drizzle

Low: 15 °C

Thursday

Chance Drizzle

Chance
Drizzle

High: 23 °C

Thursday
Night

Patchy Fog

Patchy
Fog

Low: 15 °C

Friday

Patchy Fog

Patchy
Fog

High: 22 °C

Friday
Night

Patchy Fog

Patchy
Fog

Low: 15 °C

Saturday

Patchy Fog

Patchy
Fog

High: 22 °C

Saturday
Night

Patchy Fog

Patchy
Fog

Low: 15 °C

Detailed Forecast

  • Overnight A chance of drizzle. Patchy fog. Otherwise, mostly cloudy, with a low around 14. West southwest wind 11 to 16 km/h.
  • Wednesday A chance of drizzle before 11am. Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 22. Light and variable wind becoming west southwest 11 to 16 km/h in the afternoon.
  • Wednesday Night A chance of drizzle after 11pm. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 15. West southwest wind 18 to 23 km/h decreasing to 5 to 10 km/h after midnight. Winds could gust as high as 29 km/h.
  • Thursday A chance of drizzle before 11am. Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 23. Calm wind.
  • Thursday Night Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 15. West southwest wind 13 to 23 km/h, with gusts as high as 32 km/h.
  • Friday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 22.
  • Friday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 15.
  • Saturday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 22.
  • Saturday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 15.
  • Sunday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 22.
  • Sunday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 15.
  • Monday Patchy fog before 11am. Otherwise, partly sunny, with a high near 22.
  • 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.