Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Hazardous Weather Conditions

Current conditions at

LOS ALTOS (LOAC1)

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

47°F

8°C

Humidity	89%
Wind Speed	W 4 MPH
Barometer	NA
Dewpoint	44°F (7°C)
Visibility	NA
Wind Chill	45°F (7°C)
Last update	17 Feb 02:10 PM PST

More Information:

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

Extended Forecast for

2 Miles S Cupertino CA

Cold Weather Advisory February 18, 12:00am until February 18, 09:00am

Flood Advisory February 17, 02:59pm until February 17, 05:00pm

Click here for hazard details and duration

Cold Weather Advisory

Flood Advisory

Flood Advisory February 17, 02:59pm until February 17, 05:00pm
NOW until 5:00pm Tue
Flood Advisory
This Afternoon
High: 50 °F
Showers
Tonight
Low: 36 °F
Rain
Wednesday
High: 50 °F
Rain Likely
then Slight
Chance Rain
Wednesday Night
Low: 39 °F
Rain
Thursday
High: 48 °F
Rain then
Rain Likely
Thursday Night
Low: 34 °F
Chance Rain
Friday
High: 52 °F
Slight Chance
Rain
Friday Night
Low: 37 °F
Chance Rain

Detailed Forecast

This Afternoon

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 50. West southwest wind around 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Rain and thunderstorms before 4am, then rain likely. Low around 36. West wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Rain likely, mainly before 3pm. Partly sunny, with a high near 50. Calm wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain, mainly after 10pm. Low around 39. South southeast wind 5 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain, mainly before 4pm. High near 48. Northwest wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

A 40 percent chance of rain, mainly before 10pm. Partly cloudy, with a low around 34.

Friday

A slight chance of rain between 10am and 4pm. Mostly sunny, with a high near 52. Chance of precipitation is 20%.

Friday Night

A chance of rain, mainly between 10pm and 4am. Partly cloudy, with a low around 37.

Saturday

A chance of rain, mainly after 10am. Partly sunny, with a high near 55.

Saturday Night

Rain likely, mainly after 10pm. Mostly cloudy, with a low around 46.

Sunday

Rain. Mostly cloudy, with a high near 59.