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 West Coast through 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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2 Miles NNW Castro Valley CA

7 Day Forecast

Today

Slight Chance Rain Chance for Measurable Precipitation 20%

Slight Chc
Rain

High: 60 °F

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 52 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 62 °F

Monday
Night

Mostly Clear

Mostly
Clear

Low: 49 °F

Tuesday

Sunny

Sunny

High: 63 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 50 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 61 °F

Wednesday
Night

Slight Chance Rain

Slight Chc
Rain

Low: 48 °F

Christmas
Day

Mostly Sunny

Mostly
Sunny

High: 58 °F

Detailed Forecast

  • Today A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 60. South wind 5 to 8 mph becoming west in the afternoon.
  • Tonight Mostly cloudy, with a low around 52. Light and variable wind.
  • Monday Mostly sunny, with a high near 62. North northwest wind 5 to 9 mph.
  • Monday Night Mostly clear, with a low around 49. North northwest wind 5 to 7 mph becoming calm in the evening.
  • Tuesday Sunny, with a high near 63. North northeast wind 8 to 16 mph, with gusts as high as 21 mph.
  • Tuesday Night Partly cloudy, with a low around 50.
  • Wednesday Mostly sunny, with a high near 61.
  • Wednesday Night A slight chance of rain. Mostly cloudy, with a low around 48.
  • Christmas Day Mostly sunny, with a high near 58.
  • Thursday Night Mostly clear, with a low around 43.
  • Friday Sunny, with a high near 57.
  • Friday Night Mostly clear, with a low around 44.
  • Saturday Sunny, with a high near 58.