Heat Wave Continues in the West; Critical Fire Weather Conditions in the High 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. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Clear

54°F

12°C

Humidity 87%
Wind Speed E 3 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 18 Mar 02:35 AM PDT
Extended Forecast for

Napa CA

Heat Advisory March 18, 02:48am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 02:48am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 53 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Calm wind.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Overnight
Clear, with a low around 53. Calm wind.
Wednesday
Sunny, with a high near 89. Calm wind.
Wednesday Night
Clear, with a low around 57. Calm wind.
Thursday
Sunny, with a high near 92. Calm wind.
Thursday Night
Clear, with a low around 58. Calm wind.
Friday
Sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 77.
Monday Night
Mostly cloudy, with a low around 51.
Tuesday
Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
1:59 am PDT Mar 18, 2026
2am PDT Mar 18, 2026-6pm PDT Mar 24, 2026
 
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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