Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Heat Advisory until March 20, 08:00 PM PDT

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

70°F

21°C

Humidity	22%
Wind Speed	NNW 13 MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	NA
Last update	17 Mar 02:00 AM PDT

More Information:

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

Extended Forecast for

2 Miles S Clayton CA

Heat Advisory March 17, 06:09am until March 20, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory March 17, 06:09am until March 20, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Today
High: 88 °F
Sunny
Tonight
Low: 62 °F
Clear
Wednesday
High: 90 °F
Sunny
Wednesday Night
Low: 62 °F
Clear
Thursday
High: 91 °F
Sunny
Thursday Night
Low: 64 °F
Clear
Friday
High: 92 °F
Sunny
Friday Night
Low: 63 °F
Mostly Clear