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

San Francisco, San Francisco International Airport (KSFO)

Lat: 37.61961°NLon: 122.36558°WElev: 10.0ft.

Rain

57°F

14°C

Humidity	93%
Wind Speed	S 5 MPH
Barometer	29.85 in (1010.84 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	10 Apr 05:56 AM PDT

More Information:

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

Extended Forecast for

San Mateo CA

Today
High: 67 °F
Showers
Likely
Tonight
Low: 54 °F
Showers
Likely
Saturday
High: 65 °F
Showers
Saturday Night
Low: 50 °F
Showers
Sunday
High: 61 °F
Showers
Sunday Night
Low: 49 °F
Chance Rain
Monday
High: 64 °F
Mostly Sunny
Monday Night
Low: 50 °F
Mostly Clear
Tuesday
High: 64 °F
Sunny

Detailed Forecast

Today

Showers and thunderstorms likely before 11am, then showers likely and possibly a thunderstorm between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 67. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 11pm, then a chance of rain after 11pm. Mostly cloudy, with a low around 54. South southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 65. South wind 5 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and possibly a thunderstorm. Low around 50. South southwest wind 9 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers and possibly a thunderstorm. High near 61. South southwest wind 7 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 40 percent chance of rain, mainly before 11pm. Partly cloudy, with a low around 49.

Monday

Mostly sunny, with a high near 64.

Monday Night

Mostly clear, with a low around 50.

Tuesday

Sunny, with a high near 64.

Tuesday Night

Mostly clear, with a low around 49.

Wednesday

Mostly sunny, with a high near 67.