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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

San Francisco Bay Oakland International Airport (KOAK)

Lat: 37.72126°NLon: 122.22115°WElev: 9.0ft.

Mist

45°F

7°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 45°F (7°C)
Visibility 4.00 mi
Last update 07 Dec 08:20 PM PST
Extended Forecast for

San Leandro CA

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 60. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 63. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 43. Calm wind.
Monday
Patchy fog before 9am. Otherwise, sunny, with a high near 60. Calm wind becoming west northwest around 5 mph in the afternoon.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 45. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 63. Calm wind becoming north northwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 48.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 46.
Friday
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 45.
Saturday
Patchy fog. Otherwise, sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Leandro CA
 37.73°N 122.14°W (Elev. 184 ft)
Last Update:
8:31 pm PST Dec 7, 2025
Forecast Valid:
8pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

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Chance of Precipitation