Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring critical fire weather to the southern High Plains Friday. A winter storm will track across the Great Lakes and Northeast U.S. Friday into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Hazardous Weather Conditions

Extreme Cold Warning in effect from February 20, 01:00 AM PST until February 20, 09:00 AM PST

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Clear

34°F

1°C

Humidity	93%
Wind Speed	N 0 MPH
Barometer	29.99 in (1015.58 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	20 Feb 02:00 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Saint Helena CA

Extreme Cold Warning until February 20, 09:00am

Click here for hazard details and duration

Extreme Cold Warning

Extreme Cold Warning until February 20, 09:00am
NOW until 9:00am Fri
Extreme Cold Warning
Overnight
Low: 30 °F
Frost
Friday
High: 52 °F
Frost then
Partly Sunny
Friday Night
Low: 34 °F
Patchy Frost
and Patchy
Fog
Saturday
High: 56 °F
Partly Sunny
Saturday Night
Low: 45 °F
Chance Rain
Sunday
High: 60 °F
Rain Likely
Sunday Night
Low: 50 °F
Chance Rain
and Patchy
Fog
Monday
High: 63 °F
Rain Likely
and Patchy
Fog

Detailed Forecast

Overnight

Widespread frost. Otherwise, mostly clear, with a low around 30. Calm wind.

Friday

Widespread frost before 9am. Otherwise, partly sunny, with a high near 52. Calm wind.

Friday Night

Patchy fog after 10pm. Patchy frost after 11pm. Otherwise, partly cloudy, with a low around 34. Calm wind.

Saturday

Partly sunny, with a high near 56. Calm wind becoming south southeast around 6 mph in the afternoon.

Saturday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 45. South southeast wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

Sunday

Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

A 50 percent chance of rain. Patchy fog after 10pm. Otherwise, cloudy, with a low around 50.

Monday

Rain likely, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 63.

Monday Night

Rain. Patchy fog after 10pm. Otherwise, cloudy, with a low around 52.

Tuesday

Rain. Patchy fog before 10am. Otherwise, cloudy, with a high near 61.

Tuesday Night

Rain likely. Patchy fog. Otherwise, cloudy, with a low around 48.

Wednesday

Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 63.