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, San Francisco International Airport (KSFO)

Lat: 37.61961°NLon: 122.36558°WElev: 10.0ft.

Mostly Cloudy

50°F

10°C

Humidity 89%
Wind Speed N 6 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 47°F (8°C)
Visibility 9.00 mi
Wind Chill48°F (9°C)
Last update 07 Dec 05:56 PM PST
Extended Forecast for

Colma CA

  • Tonight

    Tonight: Patchy fog after 7pm. Otherwise, mostly clear, with a low around 45. North northeast wind 3 to 5 mph.

    Low: 45 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, sunny, with a high near 61. Northeast wind 5 to 7 mph becoming northwest in the afternoon.

    High: 61 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog. Otherwise, partly cloudy, with a low around 47. North wind around 6 mph.

    Low: 47 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 60. North wind 5 to 7 mph.

    High: 60 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly clear, with a low around 47. North wind around 6 mph.

    Low: 47 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Areas Fog
    then Sunny

  • Wednesday Night

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

    Low: 48 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog after 7pm. Otherwise, mostly clear, with a low around 45. North northeast wind 3 to 5 mph.
Monday
Areas of fog before 9am. Otherwise, sunny, with a high near 61. Northeast wind 5 to 7 mph becoming northwest in the afternoon.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 47. North wind around 6 mph.
Tuesday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 60. North wind 5 to 7 mph.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 47. North wind around 6 mph.
Wednesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 63.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 48.
Thursday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 64.
Thursday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 48.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 64.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 47.
Saturday
Areas of fog. Otherwise, mostly sunny, with a high near 63.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 48.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Colma CA
 37.68°N 122.44°W (Elev. 338 ft)
Last Update:
5:02 pm PST Dec 7, 2025
Forecast Valid:
6pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation