Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Current conditions at

Santa Ana, John Wayne Airport-Orange County Airport (KSNA)

Lat: 33.68°NLon: 117.86639°WElev: 52ft.

Partly Cloudy

82°F

28°C

Humidity 55%
Wind Speed S 17 MPH
Barometer 29.80 in (1009.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 23 Jul 3:53 pm PDT
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Patchy fog after 11pm.  Otherwise, increasing clouds, with a low around 65. South wind 5 to 10 mph.

    Patchy Fog

    Low: 65 °F

  • Sunday

    Sunday: Patchy fog before 11am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Patchy Fog
    then Sunny

    High: 77 °F

  • Sunday
    Night

    Sunday Night: Increasing clouds, with a low around 65. South wind 5 to 10 mph becoming light  in the evening.

    Increasing
    Clouds

    Low: 65 °F

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 76. Southwest wind 5 to 10 mph.

    Gradual
    Clearing

    High: 76 °F

  • Monday
    Night

    Monday Night: Increasing clouds, with a low around 65. Southwest wind 5 to 10 mph becoming light south  in the evening.

    Increasing
    Clouds

    Low: 65 °F

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 78.

    Decreasing
    Clouds

    High: 78 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Partly Cloudy

    Low: 65 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77.

    Mostly Sunny

    High: 77 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 65.

    Partly Cloudy

    Low: 65 °F

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 65. South wind 5 to 10 mph.
Sunday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. South wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 65. South wind 5 to 10 mph becoming light in the evening.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 76. Southwest wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 65. Southwest wind 5 to 10 mph becoming light south in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 77.
Click Map For Forecast
Point Forecast:
Costa Mesa CA
 33.64°N 117.91°W (Elev. 13 ft)
11:13 am PDT Jul 23, 2016
4pm PDT Jul 23, 2016-6pm PDT Jul 30, 2016
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database