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

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

61°F

16°C

Humidity 83%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 22 Aug 11:10 PM PDT
Extended Forecast for

3 Miles SSE Portola Valley CA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 69. Northwest wind 3 to 6 mph.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Light and variable wind.

    High: 79 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. Light west northwest wind.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 69. Northwest wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 83. Calm wind becoming west southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 68. South southwest wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Light and variable wind.
Monday Night
Partly cloudy, with a low around 64. Light west northwest wind.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Portola Valley CA
 37.33°N 122.18°W (Elev. 1998 ft)
11:27 pm PDT Aug 22, 2026
12am PDT Aug 23, 2026-6pm PDT Aug 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database