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.

74°F

23°C

Humidity	22%
Wind Speed	ESE 1 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Last update	19 Mar 10:10 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 19, 10:46am until March 20, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory March 19, 10:46am until March 20, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Today
High: 90 °F
Sunny
Tonight
Low: 63 °F
Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 62 °F
Mostly Clear
Saturday
High: 85 °F
Mostly Sunny
Saturday Night
Low: 56 °F
Mostly Clear
Sunday
High: 82 °F
Sunny
Sunday Night
Low: 53 °F
Mostly Clear