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 >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

28°F

-2°C

Humidity	98%
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Last update	17 Feb 11:20 PM PST

More Information:

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

Extended Forecast for

Clayton CA

Tonight
Low: 36 °F
Chance
Rain/Snow
Wednesday
High: 46 °F
Chance
Rain/Snow
then Chance
Rain
Wednesday Night
Low: 42 °F
Chance Rain
then Rain
Thursday
High: 46 °F
Rain then
Chance Rain
Thursday Night
Low: 34 °F
Slight Chance
Rain then
Areas Frost
Friday
High: 48 °F
Patchy Frost
then Mostly
Sunny
Friday Night
Low: 37 °F
Mostly Cloudy
Saturday
High: 53 °F
Chance Rain
Saturday Night
Low: 47 °F
Rain

Detailed Forecast

Tonight

A chance of rain, mixing with snow after midnight, then gradually ending. Areas of frost after 2am. Otherwise, mostly cloudy, with a low around 36. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Wednesday

A slight chance of rain and snow before 9am, then a chance of rain between 9am and 4pm. Areas of frost before 7am. Otherwise, partly sunny, with a high near 46. South southwest wind 7 to 9 mph becoming west in the afternoon. Chance of precipitation is 50%. Little or no snow accumulation expected.

Wednesday Night

Rain, mainly after 1am. Steady temperature around 42. South wind 7 to 12 mph increasing to 16 to 21 mph. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain, mainly before 10am. High near 46. West wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

A 20 percent chance of rain before 10pm. Areas of frost after 1am. Otherwise, mostly clear, with a low around 34. West wind 8 to 14 mph, with gusts as high as 25 mph.

Friday

Patchy frost before 9am. Otherwise, mostly sunny, with a high near 48.

Friday Night

Mostly cloudy, with a low around 37.

Saturday

A chance of rain, mainly after 4pm. Partly sunny, with a high near 53.

Saturday Night

Rain, mainly after 10pm. Mostly cloudy, with a low around 47.

Sunday

Rain. Mostly cloudy, with a high near 58.

Sunday Night

Rain. Cloudy, with a low around 52.