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

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

32°F

0°C

Humidity	99%
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	32°F (0°C)
Visibility	NA
Last update	18 Feb 01:35 PM PST

More Information:

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

Extended Forecast for

4 Miles SSE Clayton CA

This Afternoon
High: 40 °F
Chance
Rain/Snow
Tonight
Low: 38 °F
Chance
Rain/Snow
then
Rain/Snow and
Breezy
Thursday
High: 40 °F⇓
Windy.
Rain/Snow
Likely then
Slight Chance
Snow
Thursday Night
Low: 33 °F
Slight Chance
Snow then
Mostly Clear
Friday
High: 45 °F
Partly Sunny
Friday Night
Low: 37 °F
Partly Cloudy
Saturday
High: 50 °F
Partly Sunny
then Chance
Rain
Saturday Night
Low: 46 °F
Rain Likely
and Breezy
Sunday
High: 55 °F
Rain and
Breezy

Detailed Forecast

This Afternoon

A chance of snow, mixing with rain after 2pm, then gradually ending. Partly sunny, with a high near 40. West wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than one inch possible.

Tonight

Rain, possibly mixed with snow, becoming all rain after 4am. Steady temperature around 38. Breezy, with a southwest wind 14 to 23 mph becoming southeast after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Thursday

Rain and snow likely before 3pm, then a slight chance of snow after 4pm. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 36 by 9am. Windy, with a west northwest wind 24 to 30 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Thursday Night

A 20 percent chance of snow before 10pm. Mostly clear, with a low around 33. West northwest wind 10 to 15 mph, with gusts as high as 31 mph.

Friday

Partly sunny, with a high near 45. Calm wind becoming east around 6 mph in the morning.

Friday Night

Partly cloudy, with a low around 37.

Saturday

A 30 percent chance of rain after 4pm. Partly sunny, with a high near 50.

Saturday Night

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

Sunday

Rain. Mostly cloudy, with a high near 55. Breezy.