• Cloudy 61°
    Snow Days Current Weather
    • Wind
      Chill
      61°
    • Yesterday
      Precip
      0 in
    • Cloud
      Cover
      100%
  • Today

    May 22

    Hi 65°

    Mostly cloudy and cool

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    Day Details >
  • Tomorrow

    May 23

    Hi 63°

    Clouds giving way to some sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    Day Details >
  • Sunday

    May 24

    Hi 67°

    Clouds, then sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    Day Details >
Next

Cool today

5/22 5/23 Now: 12:09pm
PM 12-4
  • 12pm Mostly cloudy 63° 0%
  • 1pm Intermittent clouds 64° 0%
  • 2pm Intermittent clouds 65° 0%
  • 3pm Intermittent clouds 65° 0%
  • 4pm Intermittent clouds 64° 0%
PM 11-4
  • 11pm Cloudy 57° 0%
  • 12am Mostly cloudy 57° 0%
  • 1am Mostly cloudy 57° 0%
  • 2am Cloudy 57° 0%
  • 3am Cloudy 57° 0%
  • 4am Cloudy 57° 0%
AM 5-10
  • 5am Cloudy 57° 0%
  • 6am Cloudy 57° 0%
  • 7am Cloudy 57° 0%
  • 8am Cloudy 57° 0%
  • 9am Cloudy 59° 0%
  • 10am Cloudy 60° 0%
Hourly Forecast >
May 22, 2015; 5:22 AM ET
Five-day Weather Forecast for San Francisco, CA
San Francisco, CA Weather Forecast

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The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Fri. Snow Day Potential