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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Palo Alto Airport (KPAO)

Lat: 37.46667°NLon: 122.11667°WElev: 7.0ft.

Clear

70°F

21°C

Humidity 68%
Wind Speed N 17 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 21 Aug 01:47 PM PDT
Extended Forecast for

Atherton CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 76. Northwest wind around 10 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. Light and variable wind becoming northwest 5 to 10 mph in the morning.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 59. West northwest wind 5 to 9 mph becoming light west southwest after midnight.

    Low: 59 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 76. Northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 58. Northwest wind 5 to 7 mph becoming calm after midnight.
Saturday
Sunny, with a high near 79. Light and variable wind becoming northwest 5 to 10 mph in the morning.
Saturday Night
Increasing clouds, with a low around 59. West northwest wind 5 to 9 mph becoming light west southwest after midnight.
Sunday
Mostly sunny, with a high near 80. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Atherton CA
 37.45°N 122.18°W (Elev. 95 ft)
Last Update:
1:47 pm PDT Aug 21, 2026
Forecast Valid:
2pm PDT Aug 21, 2026-6pm PDT Aug 27, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation