Tracking Areas of Fire Weather, Winter Weather, and Severe Weather Thursday

Continuation of gusty winds and low relative humidity will bring additional periods of critical fire weather to the southern Plains Thursday and Friday. Another Pacific storm will continue gusty winds and heavy snow over the western mountains into Thursday. Severe thunderstorms are possible across parts of the middle Mississippi into lower Ohio Valleys Thursday afternoon into early evening. 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.

Rain

43°F

6°C

Humidity	86%
Wind Speed	SW 3 MPH
Barometer	29.69 in (1005.42 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	19 Feb 06:55 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 February 20, 01:00am until February 20, 09:00am

Click here for hazard details and duration

Extreme Cold Warning

Today
High: 52 °F
Chance Rain
Tonight
Low: 30 °F
Patchy Frost
then Frost
and Patchy
Fog
Friday
High: 52 °F
Frost and
Patchy Fog
then Partly
Sunny
Friday Night
Low: 35 °F
Partly Cloudy
then Patchy
Frost and
Patchy Fog
Saturday
High: 55 °F
Slight Chance
Rain
Saturday Night
Low: 45 °F
Chance Rain
Sunday
High: 59 °F
Rain Likely
Sunday Night
Low: 51 °F
Rain Likely
Monday
High: 62 °F
Rain Likely

Detailed Forecast

Today

A chance of rain before 1pm, then a slight chance of rain after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 52. West northwest wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight

Patchy fog after 3am. Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 30. Light north northwest wind.

Friday

Patchy fog before 7am. Widespread frost before 9am. Otherwise, mostly sunny, with a high near 52. Calm wind.

Friday Night

Patchy fog after midnight. Patchy frost after midnight. Otherwise, partly cloudy, with a low around 35. Calm wind.

Saturday

A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 55. Calm wind becoming southeast around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 45. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday

Rain likely. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.

Sunday Night

Rain likely. Cloudy, with a low around 51.

Monday

Rain likely. Cloudy, with a high near 62.

Monday Night

Rain. Patchy fog after 1am. Otherwise, cloudy, with a low around 52.

Tuesday

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