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

Hazardous Weather Conditions

Current conditions at

FW0058 Santa Ana Fire (F0058)

Lat: 33.74333°NLon: 117.86783°WElev: 108.14ft.

NA

75°F

24°C

Humidity 83%
Wind Speed SW 0 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 69°F (21°C)
Visibility NA
Last update 26 Aug 02:45 AM PDT
Extended Forecast for

Fountain Valley CA

Extreme Heat Warning August 26, 03:09am until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 26, 03:09am until August 28, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Overnight

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 73. South wind around 5 mph becoming calm after midnight.

    Low: 73 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 92. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 92 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Patchy Fog

  • Friday

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

    High: 91 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, sunny, with a high near 89.

    High: 89 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 72. Calm wind.
Wednesday
Sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 73. South wind around 5 mph becoming calm after midnight.
Thursday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 92. Light south wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 74.
Saturday
Patchy fog before 11am. Otherwise, sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 68.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fountain Valley CA
 33.71°N 117.93°W (Elev. 3 ft)
Last Update:
12:10 am PDT Aug 26, 2026
Forecast Valid:
3am PDT Aug 26, 2026-6pm PDT Sep 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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