National Weather Service United States Department of Commerce

Arctic air to drop temperatures across the northern Plain and northern Rockies; will bring snow to the Intermountain West

An arctic front is forecast to plunge through the northern Plains and northern Rockies on Saturday bringing a drastic drop in temperatures across these areas with a burst of snow over much of the Intermountain Region. Arctic air will also filter into the Pacific Northwest bringing with it snow showers and subfreezing low temperatures.
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Hazardous Weather Conditions

Current Conditions

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San Ramon CA

7 Day Forecast

Overnight

Rain Chance for Measurable Precipitation 80%

Rain

Low: 47 °F

Saturday

Showers Chance for Measurable Precipitation 90%

Showers

High: 59 °F

Saturday
Night

Showers Chance for Measurable Precipitation 80%

Showers

Low: 47 °F

Sunday

Showers Chance for Measurable Precipitation 80%

Showers

High: 58 °F

Sunday
Night

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

Low: 48 °F

Monday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 63 °F

Monday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 48 °F

Tuesday

Rain Likely

Rain
Likely

High: 59 °F

Tuesday
Night

Rain Likely

Rain
Likely

Low: 48 °F

Detailed Forecast

  • Overnight Rain. Low around 47. West southwest wind around 8 mph. Chance of precipitation is 80%.
  • Saturday Showers. High near 59. Southeast wind 6 to 8 mph. Chance of precipitation is 90%.
  • Saturday Night Showers. Low around 47. Light and variable wind. Chance of precipitation is 80%.
  • Sunday Showers. High near 58. Light southeast wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 80%.
  • Sunday Night A 40 percent chance of showers, mainly before 4am. Cloudy, with a low around 48. East wind around 5 mph.
  • Monday A 20 percent chance of showers before 10am. Cloudy, with a high near 63.
  • Monday Night A 30 percent chance of rain. Mostly cloudy, with a low around 48.
  • Tuesday Rain likely. Mostly cloudy, with a high near 59.
  • Tuesday Night Rain likely. Mostly cloudy, with a low around 48.
  • Wednesday Showers likely. Mostly cloudy, with a high near 60.
  • Wednesday Night A chance of showers. Mostly cloudy, with a low around 47.
  • Thursday A chance of showers. Mostly cloudy, with a high near 63.
  • Thursday Night A chance of showers. Mostly cloudy, with a low around 46.
  • Friday A slight chance of showers. Partly sunny, with a high near 62.