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

Hollister, CA (KCVH)

Lat: 36.8933°NLon: 121.4103°WElev: 229.0ft.

Clear

54°F

12°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 20 Mar 06:15 AM PDT
Extended Forecast for

3 Miles ESE Aromas CA

Heat Advisory March 20, 06:35am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 20, 06:35am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. Southwest wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. West southwest wind 5 to 10 mph becoming light southwest after midnight.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 78.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 91. Calm wind becoming west 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 53. Southwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 78. Calm wind becoming west 5 to 9 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 48. West southwest wind 5 to 10 mph becoming light southwest after midnight.
Sunday
Sunny, with a high near 78. Calm wind becoming west 5 to 8 mph in the afternoon.
Sunday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 47.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Aromas CA
 36.86°N 121.58°W (Elev. 400 ft)
Last Update:
2:22 am PDT Mar 20, 2026
Forecast Valid:
6am PDT Mar 20, 2026-6pm PDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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