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 SE Union City CA

7 Day Forecast

Overnight

Slight Chance Rain Chance for Measurable Precipitation 20%

Slight Chc
Rain

Low: 54 °F

Sunday

Mostly Cloudy

Mostly
Cloudy

High: 65 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 53 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 65 °F

Monday
Night

Mostly Clear

Mostly
Clear

Low: 50 °F

Tuesday

Sunny

Sunny

High: 66 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 50 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 65 °F

Wednesday
Night

Slight Chance Rain

Slight Chc
Rain

Low: 48 °F

Detailed Forecast

  • Overnight A 20 percent chance of rain. Mostly cloudy, with a low around 54. Light south wind.
  • Sunday Mostly cloudy, with a high near 65. Calm wind becoming west around 6 mph in the afternoon.
  • Sunday Night Mostly cloudy, with a low around 53. Northwest wind 3 to 6 mph.
  • Monday Mostly sunny, with a high near 65. Calm wind becoming north northwest around 6 mph in the morning.
  • Monday Night Mostly clear, with a low around 50. North northeast wind 3 to 5 mph.
  • Tuesday Sunny, with a high near 66.
  • Tuesday Night Partly cloudy, with a low around 50.
  • Wednesday Mostly sunny, with a high near 65.
  • Wednesday Night A slight chance of rain. Partly cloudy, with a low around 48.
  • Christmas Day Mostly sunny, with a high near 63.
  • Thursday Night Mostly clear, with a low around 44.
  • Friday Sunny, with a high near 62.
  • Friday Night Mostly clear, with a low around 45.
  • Saturday Mostly sunny, with a high near 63.