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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Palo Alto Airport (KPAO)

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

Clear

73°F

23°C

Humidity 64%
Wind Speed NNW 13 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 Jun 04:47 PM PDT
Extended Forecast for

San Carlos CA

Coastal Flood Advisory June 18, 01:40am until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 18, 01:40am until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • Overnight

    Low: 58 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Light and variable wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. Southwest wind 6 to 11 mph becoming light south southwest after midnight. Winds could gust as high as 18 mph.

    Low: 58 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 74. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. Southwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. West southwest wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 77. Light and variable wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 58. Southwest wind 6 to 11 mph becoming light south southwest after midnight. Winds could gust as high as 18 mph.
Juneteenth
Mostly sunny, with a high near 74. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 58. Southwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Carlos CA
 37.5°N 122.25°W (Elev. 82 ft)
Last Update:
1:26 am PDT Jun 18, 2026
Forecast Valid:
1am PDT Jun 18, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation