National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

Clear

82°F

28°C

Humidity 34%
Wind Speed NW 8 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 20 Mar 06:35 PM PDT
Extended Forecast for

San Jose International Airport CA

Heat Advisory March 20, 06:48pm until March 20, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory March 20, 06:48pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79. Light west northwest wind becoming north northwest 8 to 13 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming northwest 5 to 9 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. Northwest wind 6 to 11 mph becoming light west in the evening.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 57. North northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 79. Light west northwest wind becoming north northwest 8 to 13 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 50. Northwest wind 5 to 9 mph becoming calm after midnight.
Sunday
Sunny, with a high near 78. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 50. Northwest wind 6 to 11 mph becoming light west in the evening.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Jose International Airport CA
 37.35°N 121.93°W (Elev. 66 ft)
Last Update:
2:07 pm PDT Mar 20, 2026
Forecast Valid:
6pm PDT Mar 20, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation