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 >

Hazardous Weather Conditions

Special Weather Statement

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

heavy rain,mist

56°F

13°C

Humidity	90%
Wind Speed	S 24 MPH
Barometer	29.74 in (1007.11 mb)
Dewpoint	53°F (12°C)
Visibility	1.00 mi
Last update	11 Apr 05:24 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: 61 °F
Heavy Rain
and Breezy
Tonight
Low: 50 °F
Heavy Rain
Sunday
High: 62 °F
Showers
Likely
Sunday Night
Low: 49 °F
Slight Chance
Showers then
Partly Cloudy
Monday
High: 64 °F
Sunny
Monday Night
Low: 50 °F
Mostly Clear
Tuesday
High: 64 °F
Sunny
Tuesday Night
Low: 49 °F
Mostly Clear
Wednesday
High: 64 °F
Sunny

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Steady temperature around 61. Breezy, with a south wind around 22 mph, with gusts as high as 31 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 before 11pm, then showers likely and possibly a thunderstorm between 11pm and 3am, then a chance of showers and thunderstorms after 3am. Some of the storms could produce heavy rainfall. Low around 50. Southwest wind 10 to 16 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 likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 62. West southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 49. West southwest wind 5 to 10 mph becoming light southwest in the evening.

Monday

Sunny, with a high near 64. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

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

Sunny, with a high near 64.

Wednesday Night

Partly cloudy, with a low around 50.