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

KF6YUA Sebastopol (AR323)

Lat: 38.38033°NLon: 122.82367°WElev: 235.3ft.

53°F

12°C

Humidity	99%
Wind Speed	SE 2 MPH
Barometer	29.91 in (1012.87 mb)
Dewpoint	53°F (12°C)
Visibility	NA
Last update	11 Apr 09:11 AM PDT

More Information:

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

Extended Forecast for

6 Miles SSW Saint Helena CA

Today
High: 54 °F
Showers
Likely then
Heavy Rain
Tonight
Low: 47 °F
Heavy Rain
Sunday
High: 52 °F
Showers
Sunday Night
Low: 44 °F
Chance Rain
then Mostly
Clear
Monday
High: 60 °F
Mostly Sunny
Monday Night
Low: 45 °F
Mostly Clear
Tuesday
High: 63 °F
Sunny
Tuesday Night
Low: 45 °F
Mostly Clear
Wednesday
High: 63 °F
Mostly Sunny

Detailed Forecast

Today

Rain likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 54. South wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm, mainly after 11pm. Some of the storms could produce heavy rainfall. Low around 47. South southwest wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Sunday

Showers and possibly a thunderstorm before 2pm, then rain after 2pm. High near 52. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 30 percent chance of rain before 11pm. Partly cloudy, with a low around 44. West southwest wind 5 to 9 mph becoming light in the evening. Winds could gust as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Mostly sunny, with a high near 60. Light and variable wind becoming west around 6 mph in the afternoon.

Monday Night

Mostly clear, with a low around 45.

Tuesday

Sunny, with a high near 63.

Tuesday Night

Mostly clear, with a low around 45.

Wednesday

Mostly sunny, with a high near 63.

Wednesday Night

Partly cloudy, with a low around 47.