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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

60°F

16°C

Humidity 86%
Wind Speed WNW 8 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 18 Aug 03:56 AM PDT
Extended Forecast for

Colma CA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 66. West wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 66 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 55. West wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 65. West wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of drizzle after 11pm. Partly cloudy, with a low around 55. West wind 8 to 16 mph, with gusts as high as 23 mph.

    Low: 55 °F

    Slight Chance
    Drizzle

  • Wednesday

    Wednesday: Patchy fog before 7am. Otherwise, sunny, with a high near 69. West wind 5 to 13 mph.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 71.

    High: 71 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 66. West wind 6 to 14 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 55. West wind 7 to 14 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 65. West wind 6 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of drizzle after 11pm. Partly cloudy, with a low around 55. West wind 8 to 16 mph, with gusts as high as 23 mph.
Wednesday
Patchy fog before 7am. Otherwise, sunny, with a high near 69. West wind 5 to 13 mph.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 56.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 71.
Friday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 56.
Saturday
Patchy fog. Otherwise, partly sunny, with a high near 69.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 56.
Sunday
Patchy fog. Otherwise, partly sunny, with a high near 65.
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:
2:40 am PDT Aug 18, 2025
Forecast Valid:
4am PDT Aug 18, 2025-6pm PDT Aug 24, 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