Winter Weather in the Eastern U.S.; Fire Weather in the Southern High Plains

A wintry mix may impact travel across portions of the Ohio Valley, central Appalachians, Mid-Atlantic, and Northeast U.S. today through Tuesday. Gusty winds and low relative humidity will bring elevated to critical fire weather to northeastern New Mexico and southeastern Colorado today and Tuesday. Read More >

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

63°F

17°C

Humidity	68%
Wind Speed	NW 1 MPH
Barometer	NA
Dewpoint	52°F (11°C)
Visibility	NA
Last update	02 Mar 12:10 PM PST

More Information:

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

Extended Forecast for

Portola Valley CA

This Afternoon
High: 63 °F
Mostly Sunny
Tonight
Low: 48 °F
Patchy Fog
Tuesday
High: 66 °F
Patchy Fog
then Sunny
Tuesday Night
Low: 48 °F
Increasing
Clouds
Wednesday
High: 62 °F
Mostly Sunny
Wednesday Night
Low: 43 °F
Clear
Thursday
High: 63 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Friday
High: 68 °F
Sunny

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 63. West northwest wind 3 to 5 mph.

Tonight

Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 48. Light west wind.

Tuesday

Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 66. Calm wind becoming northwest 5 to 8 mph in the afternoon.

Tuesday Night

Increasing clouds, with a low around 48. West northwest wind around 6 mph.

Wednesday

Mostly sunny, with a high near 62. West northwest wind 6 to 13 mph, with gusts as high as 25 mph.

Wednesday Night

Clear, with a low around 43.

Thursday

Sunny, with a high near 63.

Thursday Night

Clear, with a low around 46.

Friday

Sunny, with a high near 68.