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

Hazardous Weather Conditions

Current conditions at

Los Alamitos Army Airfield (KSLI)

Lat: 33.79628°NLon: 118.04179°WElev: 26.0ft.

Mostly Cloudy

77°F

25°C

Humidity 76%
Wind Speed N 0 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 09 Sep 02:55 AM PDT
Extended Forecast for

Cypress CASimilar City Names

Heat Advisory September 9, 08:00pm until September 10, 08:00pm
Extreme Heat Warning September 9, 03:53am until September 9, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Extreme Heat Warning September 9, 03:53am until September 9, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Overnight

    Low: 76 °F

    Slight Chance
    Sprinkles

  • Wednesday

    Wednesday: Sunny, with a high near 104. Heat index values as high as 114. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 104 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph becoming southeast after midnight.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Light southeast wind becoming south 5 to 10 mph in the morning.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 68.

    Low: 68 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Overnight
A slight chance of sprinkles. Partly cloudy, with a low around 76. Calm wind.
Wednesday
Sunny, with a high near 104. Heat index values as high as 114. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 91. Light southeast wind becoming south 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 72. South wind around 5 mph.
Friday
Sunny, with a high near 86.
Friday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 68.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 65.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cypress CASimilar City Names
 33.81°N 118.03°W (Elev. 16 ft)
Last Update:
1:36 am PDT Sep 9, 2026
Forecast Valid:
3am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation