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 12:25 AM PST

More Information:

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

Extended Forecast for

3 Miles SSE 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: 43 °F
Breezy. Rain
Likely then
Chance Rain
Thursday Night
Low: 34 °F
Slight Chance
Rain/Snow
then Mostly
Clear
Friday
High: 46 °F
Partly Sunny
Friday Night
Low: 36 °F
Partly Cloudy
Saturday
High: 52 °F
Partly Sunny
then Chance
Rain
Saturday Night
Low: 46 °F
Rain Likely
Sunday
High: 56 °F
Rain
Sunday Night
Low: 52 °F
Rain

Detailed Forecast

Overnight

Rain. Low around 37. Breezy, with a southeast wind 15 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain likely before 3pm, then a slight chance of rain after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 43. Breezy, with a west wind 23 to 28 mph, with gusts as high as 44 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

A slight chance of rain and snow before 10pm. Mostly clear, with a low around 34. West wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

Friday

Partly sunny, with a high near 46. Calm wind becoming east around 6 mph in the morning.

Friday Night

Partly cloudy, with a low around 36. East southeast wind 6 to 8 mph.

Saturday

A 30 percent chance of rain after 4pm. Partly sunny, with a high near 52.

Saturday Night

Rain likely, mainly after 10pm. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

Sunday

Rain. Mostly cloudy, with a high near 56.

Sunday Night

Rain. Mostly cloudy, with a low around 52.