Tracking Areas of Fire Weather, Winter Weather, and Severe Weather Thursday

Continuation of gusty winds and low relative humidity will bring additional periods of critical fire weather to the southern Plains Thursday and Friday. Another Pacific storm will continue gusty winds and heavy snow over the western mountains into Thursday. Severe thunderstorms are possible across parts of the middle Mississippi into lower Ohio Valleys Thursday afternoon into early evening. Read More >

Hazardous Weather Conditions

Extreme Cold Warning in effect from February 20, 01:00 AM PST until February 20, 09:00 AM PST

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

32°F

0°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	32°F (0°C)
Visibility	NA
Last update	19 Feb 01:35 AM PST

More Information:

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

Extended Forecast for

3 Miles S Clayton CA

Extreme Cold Warning February 20, 01:00am until February 20, 09:00am

Click here for hazard details and duration

Extreme Cold Warning

Overnight
Low: 37 °F
Rain and
Breezy
Thursday
High: 41 °F
Breezy.
Rain/Snow
then Chance
Rain
Thursday Night
Low: 32 °F
Mostly Clear
then Frost
Friday
High: 46 °F
Partly Sunny
Friday Night
Low: 37 °F
Partly Cloudy
Saturday
High: 53 °F
Partly Sunny
Saturday Night
Low: 45 °F
Slight Chance
Rain
Sunday
High: 58 °F
Chance Rain
Sunday Night
Low: 50 °F
Chance Rain

Detailed Forecast

Overnight

Rain. Low around 37. Breezy, with a south southeast wind 20 to 23 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain and snow before noon, then a chance of rain between noon and 2pm. Steady temperature around 41. Breezy, with a west northwest wind 22 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday Night

Widespread frost before 4am, then widespread frost after 5am. Otherwise, mostly clear, with a low around 32. West wind 8 to 16 mph, with gusts as high as 30 mph.

Friday

Partly sunny, with a high near 46. Southeast wind 5 to 7 mph becoming north northeast in the afternoon.

Friday Night

Partly cloudy, with a low around 37. East wind 6 to 8 mph.

Saturday

Partly sunny, with a high near 53.

Saturday Night

A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 45.

Sunday

A chance of rain. Partly sunny, with a high near 58.

Sunday Night

A chance of rain. Mostly cloudy, with a low around 50.