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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Napa CA

7 Day Forecast

Overnight

Rain Chance for Measurable Precipitation 80%

Rain

Low: 8 °C

Saturday

Showers Chance for Measurable Precipitation 80%

Showers

High: 15 °C

Saturday
Night

Showers Chance for Measurable Precipitation 80%

Showers

Low: 8 °C

Sunday

Showers Chance for Measurable Precipitation 80%

Showers

High: 14 °C

Sunday
Night

Chance Showers Chance for Measurable Precipitation 50%

Chance
Showers

Low: 8 °C

Monday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 17 °C

Monday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 8 °C

Tuesday

Rain Likely

Rain
Likely

High: 15 °C

Tuesday
Night

Rain Likely

Rain
Likely

Low: 8 °C

Detailed Forecast

  • Overnight Rain. Low around 8. South wind around 11 km/h. Chance of precipitation is 80%.
  • Saturday Showers. High near 15. East southeast wind 8 to 11 km/h. Chance of precipitation is 80%.
  • Saturday Night Showers. Low around 8. East wind 5 to 8 km/h. Chance of precipitation is 80%.
  • Sunday Showers. High near 14. East wind 8 to 16 km/h. Chance of precipitation is 80%.
  • Sunday Night A 50 percent chance of showers. Cloudy, with a low around 8. East wind 21 to 23 km/h.
  • Monday A 30 percent chance of showers, mainly before 10am. Cloudy, with a high near 17.
  • Monday Night A 30 percent chance of rain. Mostly cloudy, with a low around 8.
  • Tuesday Rain likely. Mostly cloudy, with a high near 15.
  • Tuesday Night Rain likely. Mostly cloudy, with a low around 8.
  • Wednesday Showers likely. Mostly cloudy, with a high near 17.
  • Wednesday Night A chance of showers. Mostly cloudy, with a low around 8.
  • Thursday A chance of showers. Mostly cloudy, with a high near 18.
  • Thursday Night A chance of showers. Mostly cloudy, with a low around 7.
  • Friday A slight chance of showers. Partly sunny, with a high near 18.