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

Hazardous Weather Conditions

Current conditions at

John Wayne-Orange County Airport (KSNA)

Lat: 33.6798°NLon: 117.8674°WElev: 39.0ft.

Partly Cloudy

66°F

19°C

Humidity 63%
Wind Speed N 3 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Mar 07:20 AM PDT
Extended Forecast for

3 Miles ESE Tustin CA

Heat Advisory March 18, 07:32am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 07:32am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 63. Southwest wind around 5 mph becoming calm.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Calm wind becoming west around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 64. West wind around 5 mph becoming calm.

    Low: 64 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 97. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 91.

    High: 91 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 58.

    Low: 58 °F

    Patchy Fog

Detailed Forecast

Today
Sunny, with a high near 95. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 63. Southwest wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 96. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 64. West wind around 5 mph becoming calm.
Friday
Sunny, with a high near 97. Light west wind increasing to 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 61.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 91.
Saturday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 58.
Sunday
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 86.
Sunday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58.
Monday
Patchy fog. Otherwise, sunny, with a high near 84.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 58.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Tustin CA
 33.71°N 117.76°W (Elev. 194 ft)
Last Update:
2:13 am PDT Mar 18, 2026
Forecast Valid:
7am PDT Mar 18, 2026-6pm PDT Mar 24, 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