Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Rain

56°F

13°C

Humidity	90%
Wind Speed	SE 12 MPH
Barometer	29.84 in (1010.5 mb)
Dewpoint	53°F (12°C)
Visibility	7.00 mi
Last update	11 Apr 11:53 AM PDT

More Information:

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

Extended Forecast for

4 Miles W Saint Helena CA

This Afternoon
High: 54 °F
Heavy Rain
Tonight
Low: 46 °F
Heavy Rain
Sunday
High: 50 °F
Showers
Sunday Night
Low: 45 °F
Chance
Showers then
Partly Cloudy
Monday
High: 57 °F
Mostly Sunny
Monday Night
Low: 47 °F
Mostly Clear
Tuesday
High: 61 °F
Sunny
Tuesday Night
Low: 48 °F
Mostly Clear
Wednesday
High: 61 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. Some of the storms could produce heavy rainfall. High near 54. South wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Low around 46. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Sunday

Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 50. West southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 45. West southwest wind 5 to 9 mph becoming light west after midnight. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 57. Calm wind becoming west around 5 mph in the afternoon.

Monday Night

Mostly clear, with a low around 47.

Tuesday

Sunny, with a high near 61.

Tuesday Night

Mostly clear, with a low around 48.

Wednesday

Mostly sunny, with a high near 61.

Wednesday Night

Partly cloudy, with a low around 50.