Heavy Rain and Thunderstorms in the Plains; Tropical Moisture Brings Heavy Rain to Southern California and Southwest

Heavy rain showers and thunderstorms, some severe, will persist across the Plains and Mississippi Valley through Friday. Increasing tropical moisture from the remnants of Mario will bring showers, thunderstorms, and a flash flooding threat across much of southern California into the Desert Southwest through Friday. Read More >

Current conditions at

Palo Alto Airport (KPAO)

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

Mostly Cloudy

72°F

22°C

Humidity 68%
Wind Speed NNW 9 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 Sep 08:47 PM PDT
Extended Forecast for

San Carlos CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 62. West southwest wind 3 to 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 11am.  Mostly cloudy, with a high near 81. Light and variable wind becoming northwest 5 to 9 mph in the morning.  New precipitation amounts of less than a tenth of an inch possible.

    High: 81 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 62. West wind around 6 mph becoming calm  in the evening.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 11am.  Mostly sunny, with a high near 81. Calm wind becoming west 5 to 7 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 81 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. West wind 5 to 8 mph becoming calm  in the evening.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 62. West southwest wind 3 to 5 mph.
Thursday
A 20 percent chance of showers after 11am. Mostly cloudy, with a high near 81. Light and variable wind becoming northwest 5 to 9 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. West wind around 6 mph becoming calm in the evening. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers, mainly before 11am. Mostly sunny, with a high near 81. Calm wind becoming west 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly clear, with a low around 61. West wind 5 to 8 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 83.
Sunday Night
Clear, with a low around 61.
Monday
Sunny, with a high near 89.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 62.
Tuesday
A chance of showers. Partly sunny, with a high near 82.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
San Carlos CA
 37.5°N 122.25°W (Elev. 82 ft)
8:05 pm PDT Sep 17, 2025
12am PDT Sep 18, 2025-6pm PDT Sep 24, 2025
 
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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