Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Hazardous Weather Conditions

Cold Weather Advisory in effect from February 18, 12:00 AM PST until February 18, 09:00 AM PST

Current conditions at

LA HONDA (LAHC1)

Lat: 37.30523°NLon: 122.25525°WElev: 804.0ft.

38°F

3°C

Humidity	99%
Wind Speed	ESE 2 MPH
Barometer	NA
Dewpoint	38°F (3°C)
Visibility	NA
Last update	18 Feb 02:07 AM PST

More Information:

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

Extended Forecast for

3 Miles S Portola Valley CA

Cold Weather Advisory until February 18, 09:00am

Click here for hazard details and duration

Cold Weather Advisory

Cold Weather Advisory until February 18, 09:00am
NOW until 9:00am Wed
Cold Weather Advisory
Overnight
Low: 39 °F
Chance Snow
and Breezy
Wednesday
High: 42 °F
Rain/Snow
then Chance
Rain/Snow
Wednesday Night
Low: 42 °F
Rain Likely
then Rain
Thursday
High: 44 °F
Rain then
Rain/Snow
Likely
Thursday Night
Low: 38 °F
Chance
Rain/Snow
Friday
High: 46 °F
Mostly Sunny
Friday Night
Low: 40 °F
Partly Cloudy
then Slight
Chance Rain
Saturday
High: 51 °F
Chance Rain

Detailed Forecast

Overnight

A 50 percent chance of snow. Mostly cloudy, with a steady temperature around 39. Breezy, with a west wind 24 to 29 mph decreasing to 14 to 19 mph. Winds could gust as high as 37 mph. Little or no snow accumulation expected.

Wednesday

Rain and snow before 3pm, then a slight chance of rain between 3pm and 5pm, then a slight chance of rain and snow after 5pm. High near 42. Light and variable wind becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night

Rain, mainly after 11pm. Steady temperature around 42. South wind 13 to 18 mph becoming light and variable. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday

Rain before 1pm, then rain likely, possibly mixed with snow. High near 44. West northwest wind 10 to 15 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 36 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Thursday Night

A chance of rain and snow. Partly cloudy, with a low around 38. Northwest wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Friday

Mostly sunny, with a high near 46.

Friday Night

A 10 percent chance of rain after 4am. Partly cloudy, with a low around 40.

Saturday

A chance of rain, mainly after 10am. Partly sunny, with a high near 51.

Saturday Night

Rain, mainly after 10pm. Mostly cloudy, with a low around 48. Breezy.

Sunday

Rain. Mostly cloudy, with a high near 57. Breezy.

Sunday Night

Rain. Cloudy, with a low around 53. Breezy.