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.

thunder,light rain

64°F

18°C

Humidity	72%
Wind Speed	SSW 13 MPH
Barometer	29.82 in (1009.82 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	10 Apr 04:25 PM 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
Showers
Likely
Tonight
Low: 50 °F
Showers
Likely
Saturday
High: 55 °F⇓
Rain Likely
then Showers
Saturday Night
Low: 48 °F
Showers
Sunday
High: 52 °F
Showers
Sunday Night
Low: 48 °F
Chance Rain
then Partly
Cloudy
Monday
High: 58 °F
Slight Chance
Rain
Monday Night
Low: 48 °F
Mostly Clear
Tuesday
High: 61 °F
Sunny

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm. Mostly cloudy, with a steady temperature around 54. Southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers likely and possibly a thunderstorm before 8pm, then a chance of rain after 8pm. Mostly cloudy, with a low around 50. South southwest wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Temperature rising to near 55 by 8am, then falling to around 49 during the remainder of the day. South wind 8 to 15 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.

Saturday Night

Showers and possibly a thunderstorm before 8pm, then rain between 8pm and 11pm, then showers and possibly a thunderstorm after 11pm. Low around 48. South wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Sunday

Rain before 11am, then showers and possibly a thunderstorm after 11am. High near 52. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday Night

A 40 percent chance of rain before 11pm. Mostly cloudy, with a low around 48. New precipitation amounts of less than a tenth of an inch possible.

Monday

A 20 percent chance of rain. Mostly sunny, with a high near 58.

Monday Night

Mostly clear, with a low around 48.

Tuesday

Sunny, with a high near 61.

Tuesday Night

Mostly clear, with a low around 47.

Wednesday

Sunny, with a high near 62.