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.

47°F

8°C

Humidity	99%
Wind Speed	E 0 MPH
Barometer	29.82 in (1009.82 mb)
Dewpoint	47°F (8°C)
Visibility	NA
Last update	12 Apr 05:11 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

Overnight
Low: 45 °F
Showers
Sunday
High: 53 °F
Showers
Sunday Night
Low: 42 °F
Slight Chance
Showers then
Mostly Clear
Monday
High: 60 °F
Sunny
Monday Night
Low: 44 °F
Mostly Clear
Tuesday
High: 62 °F
Sunny
Tuesday Night
Low: 45 °F
Mostly Clear
Wednesday
High: 62 °F
Mostly Sunny
Wednesday Night
Low: 48 °F
Partly Cloudy

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Low around 45. South southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 53. West southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 20 percent chance of showers before 7pm. Partly cloudy, with a low around 42. West southwest wind 5 to 7 mph becoming calm in the evening.

Monday

Sunny, with a high near 60. West wind 3 to 6 mph.

Monday Night

Mostly clear, with a low around 44. West wind 5 to 7 mph.

Tuesday

Sunny, with a high near 62.

Tuesday Night

Mostly clear, with a low around 45.

Wednesday

Mostly sunny, with a high near 62.