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

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Clear

53°F

12°C

Humidity 76%
Wind Speed SSW 5 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 46°F (8°C)
Visibility 8.00 mi
Last update 08 Dec 02:54 PM PST
Extended Forecast for

San Lorenzo CA

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am.  Otherwise, sunny, with a high near 63. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

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

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, sunny, with a high near 67. Calm wind becoming north around 6 mph in the afternoon.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

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

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 44. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 63. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 45. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 45.
Saturday
Patchy fog before 7am. Otherwise, sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Patchy fog. Otherwise, partly sunny, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
A slight chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
San Lorenzo CA
 37.68°N 122.13°W (Elev. 112 ft)
12:26 pm PST Dec 8, 2025
3pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database