Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Hazardous Weather Conditions

Cold Weather Advisory in effect from February 18, 12:00 AM PST until February 18, 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

41°F

5°C

Humidity	82%
Wind Speed	W 3 MPH
Barometer	29.73 in (1006.77 mb)
Dewpoint	36°F (2°C)
Visibility	9.00 mi
Last update	17 Feb 09:01 PM PST

More Information:

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

Extended Forecast for

7 Miles WSW Saint Helena CA

Cold Weather Advisory February 18, 12:00am until February 18, 09:00am

Click here for hazard details and duration

Cold Weather Advisory

Tonight
Low: 34 °F
Chance Rain
Wednesday
High: 50 °F
Chance Rain
and Patchy
Fog
Wednesday Night
Low: 39 °F
Rain
Thursday
High: 48 °F
Rain then
Chance Rain
Thursday Night
Low: 33 °F
Slight Chance
Rain then
Frost
Friday
High: 51 °F
Chance Rain
Friday Night
Low: 38 °F
Chance Rain
Saturday
High: 52 °F
Rain Likely
Saturday Night
Low: 47 °F
Rain

Detailed Forecast

Tonight

A chance of rain before 2am, then a chance of rain after 3am. Patchy frost between 2am and 3am. Otherwise, partly cloudy, with a low around 34. West northwest wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday

A 40 percent chance of rain between 3pm and 4pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 50. Calm wind becoming west southwest 5 to 7 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain, mainly after 9pm. Low around 39. Southeast wind 5 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain, mainly before 10am. High near 48. Northwest wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

A 20 percent chance of rain before 10pm. Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 7 mph becoming calm after midnight.

Friday

A 30 percent chance of rain, mainly between 10am and 4pm. Widespread frost before 7am. Otherwise, partly sunny, with a high near 51. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 40 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 38.

Saturday

Rain likely, mainly after 10am. Mostly cloudy, with a high near 52.

Saturday Night

Rain. Mostly cloudy, with a low around 47.

Sunday

Rain. Cloudy, with a high near 55.

Sunday Night

Rain. Cloudy, with a low around 51.

Monday

Rain. Cloudy, with a high near 58.