Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. 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	10%
Wind Speed	WNW 3 MPH
Barometer	NA
Dewpoint	11°F (-12°C)
Visibility	NA
Last update	19 Mar 07:00 AM PDT

More Information:

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

Extended Forecast for

3 Miles S Clayton CA

Heat Advisory March 19, 09:12am until March 20, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory March 19, 09:12am until March 20, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Today
High: 85 °F
Sunny
Tonight
Low: 68 °F
Clear
Friday
High: 86 °F
Sunny
Friday Night
Low: 65 °F
Mostly Clear
Saturday
High: 81 °F
Mostly Sunny
Saturday Night
Low: 59 °F
Mostly Clear
Sunday
High: 78 °F
Sunny
Sunday Night
Low: 52 °F
Mostly Clear