Here's How Low The Temp Will Dip In Napa Valley

NAPA VALLEY, CA — A freeze warning issued by the National Weather Service was forecast to remain effective until 10 a.m. Wednesday for the valleys of the North Bay.

While sub-freezing temperatures as low as 28 degrees were expected in the Napa Valley, low temps in the middle 30s were forecasted elsewhere in the Bay Area.

"Cold conditions will be hazardous to sensitive populations such as unhoused individuals," the weather service said. "Cold conditions can lead to hypothermia with prolonged exposure. Freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing."

The North Bay valleys, Southern Salinas Valley/Arroyo Seco and Lake San Antonio went under the freeze warning at midnight.

A frost advisory was in effect for the rest of the Bay Area, from the interior East Bay to Santa Clara Valley, the eastern Santa Clara Hills, the northern Salinas Valley, the Hollister Valley, interior Monterey and San Benito counties, and the Santa Lucia range.

7-Day Weather Forecast For Napa Valley

Overnight
Widespread frost. Otherwise, mostly clear, with a low around 32. Calm wind.

Wednesday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming north around 5 mph in the afternoon.

Wednesday Night
Clear, with a low around 37. Calm wind.

Thursday
Sunny, with a high near 66. East northeast wind 3 to 5 mph.

Thursday Night
Partly cloudy, with a low around 38. Calm wind.

Friday
Mostly sunny, with a high near 63.

Friday Night
Mostly clear, with a low around 40.

Saturday
Sunny, with a high near 58.

Saturday Night
Mostly clear, with a low around 37.

Sunday
Sunny, with a high near 59.

Sunday Night
Clear, with a low around 37.

Monday
Sunny, with a high near 61.

Monday Night
Patchy frost. Otherwise, clear, with a low around 34.

Tuesday
Areas of frost. Otherwise, sunny, with a high near 60.