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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Castro Valley CA

7 Day Forecast

Overnight

Patchy Fog

Patchy
Fog

Low: 57 °F

Wednesday

Patchy Fog

Patchy
Fog

High: 76 °F

Wednesday
Night

Increasing Clouds

Increasing
Clouds

Low: 57 °F

Thursday

Becoming Sunny

Becoming
Sunny

High: 76 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 57 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 75 °F

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 57 °F

Saturday

Mostly Sunny

Mostly
Sunny

High: 76 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 57 °F

Detailed Forecast

  • Overnight Patchy fog. Otherwise, cloudy, with a low around 57. West wind 3 to 6 mph.
  • Wednesday Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.
  • Wednesday Night Increasing clouds, with a low around 57. West wind 5 to 9 mph becoming calm in the evening.
  • Thursday Mostly cloudy through mid morning, then gradual clearing, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.
  • Thursday Night Partly cloudy, with a low around 57. West wind 5 to 9 mph becoming calm in the evening.
  • Friday Mostly sunny, with a high near 75.
  • Friday Night Partly cloudy, with a low around 57.
  • Saturday Mostly sunny, with a high near 76.
  • Saturday Night Partly cloudy, with a low around 57.
  • Sunday Mostly sunny, with a high near 76.
  • Sunday Night Partly cloudy, with a low around 57.
  • Monday Sunny, with a high near 75.
  • Monday Night Partly cloudy, with a low around 57.
  • Tuesday Sunny, with a high near 75.