Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Palo Alto Airport (KPAO)

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

haze

45°F

7°C

Humidity 93%
Wind Speed WNW 4 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill43°F (6°C)
Last update 07 Dec 08:47 PM PST
Extended Forecast for

San Carlos Airport CA

  • Today

    Today: Areas of fog before 9am.  Otherwise, sunny, with a high near 61. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 61 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Widespread fog, mainly between 10pm and 5am.  Otherwise, mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Fog

  • Tuesday

    Tuesday: Areas of fog before 10am.  Otherwise, sunny, with a high near 63. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 63 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm.  Otherwise, mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 8am.  Otherwise, sunny, with a high near 66. Calm wind becoming north around 6 mph in the morning.

    High: 66 °F

    Areas Fog
    then Sunny

  • Wednesday Night

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

    Low: 48 °F

    Clear then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 7am.  Otherwise, sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 47.

    Low: 47 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Areas of fog before 9am. Otherwise, sunny, with a high near 61. Calm wind becoming north northwest around 6 mph in the afternoon.
Tonight
Widespread fog, mainly between 10pm and 5am. Otherwise, mostly clear, with a low around 47. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, sunny, with a high near 63. Calm wind becoming north northwest around 6 mph in the afternoon.
Tuesday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 47. Calm wind.
Wednesday
Areas of fog before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming north around 6 mph in the morning.
Wednesday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 48.
Thursday
Patchy fog before 7am. Otherwise, sunny, with a high near 66.
Thursday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 47.
Friday
Sunny, with a high near 66.
Friday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 46.
Saturday
Patchy fog. Otherwise, sunny, with a high near 64.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 49.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
San Carlos Airport CA
 37.52°N 122.26°W (Elev. 98 ft)
2:09 am PST Dec 8, 2025
6am PST Dec 8, 2025-6pm PST Dec 14, 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