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

San Francisco, San Francisco International Airport (KSFO)

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

Rain

57°F

14°C

Humidity	82%
Wind Speed	S 23 MPH
Barometer	29.76 in (1007.79 mb)
Dewpoint	52°F (11°C)
Visibility	6.00 mi
Last update	11 Apr 04:20 PM PDT

More Information:

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

Extended Forecast for

San Mateo CA

This Afternoon
High: 65 °F
Heavy Rain
Tonight
Low: 49 °F
Heavy Rain
Sunday
High: 62 °F
Showers
Sunday Night
Low: 48 °F
Slight Chance
Showers then
Partly Cloudy
Monday
High: 66 °F
Sunny
Monday Night
Low: 49 °F
Mostly Clear
Tuesday
High: 66 °F
Sunny
Tuesday Night
Low: 48 °F
Mostly Clear
Wednesday
High: 67 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 65. South wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms, mainly before 3am, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Low around 49. South southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 62. West southwest wind 8 to 11 mph, with gusts as high as 20 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 11pm. Partly cloudy, with a low around 48. West southwest wind 5 to 9 mph becoming calm in the evening.

Monday

Sunny, with a high near 66. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

Monday Night

Mostly clear, with a low around 49.

Tuesday

Sunny, with a high near 66.

Tuesday Night

Mostly clear, with a low around 48.

Wednesday

Mostly sunny, with a high near 67.