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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

POR31-Iron Horse (LIB09)

Lat: 39.77898°NLon: 120.50284°WElev: 5001.0ft.

NA

82°F

28°C

Humidity 16%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Heat Index80°F (27°C)
Last update 03 Oct 12:50 PM PDT
Extended Forecast for

4 Miles SW Portola CA

  • This Afternoon

    This Afternoon: Patchy smoke before 4pm. Sunny, with a high near 85. Calm wind becoming west around 5 mph.

    High: 85 °F

    Patchy Smoke

  • Tonight

    Tonight: Mostly clear, with a low around 48. West wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 45. West wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Patchy smoke before 4pm. Sunny, with a high near 85. Calm wind becoming west around 5 mph.
Tonight
Mostly clear, with a low around 48. West wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Clear, with a low around 45. West wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Portola CA
 39.76°N 120.51°W (Elev. 5164 ft)
Last Update:
11:30 am PDT Oct 3, 2026
Forecast Valid:
1pm PDT Oct 3, 2026-6pm PDT Oct 9, 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

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Chance of Precipitation