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
LA HONDA (LAHC1)
Lat: 37.30523°NLon: 122.25525°WElev: 804.0ft.NA
65°F
18°C
| Humidity | 78% |
| Wind Speed | E 2 MPH |
| Barometer | NA |
| Dewpoint | 58°F (14°C) |
| Visibility | NA |
| Last update | 18 Sep 12:07 AM PDT |
Extended Forecast for
4 Miles S Portola Valley CA
Overnight
Low: 62 °F
Mostly Cloudy
Thursday
High: 67 °F
Slight Chance
ShowersThursday Night
Low: 67 °F
Chance
ShowersFriday
High: 71 °F
Chance
ShowersFriday Night
Low: 61 °F
Mostly Clear
Saturday
High: 73 °F
Sunny
Saturday Night
Low: 61 °F
Mostly Clear
Sunday
High: 75 °F
Sunny
Sunday Night
Low: 63 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a low around 62. Southwest wind around 6 mph.
Thursday
A 20 percent chance of showers after 11am. Mostly cloudy, with a steady temperature around 67. Southwest wind around 6 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 67. Light south southwest wind. New rainfall amounts between a tenth and quarter 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 71. Light south wind. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly clear, with a low around 61. Light west wind.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 80.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 63.
Tuesday
A chance of showers. Partly sunny, with a high near 70.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 61.
Wednesday
Sunny, with a high near 70.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles S Portola Valley CA
37.33°N 122.21°W (Elev. 2231 ft)
37.33°N 122.21°W (Elev. 2231 ft)
8:05 pm PDT Sep 17, 2025
12am PDT Sep 18, 2025-6pm PDT Sep 24, 2025
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