Skip to content

Checked

San Francisco, CA 94121 Weather

Tonight: Mostly Cloudy, low 54°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

San Francisco, CA 94121 current weather

56°F

Partly Cloudy

Forecast for this hour. No recent report from a nearby station.

H -- / L 54°

No recent station report. NWS hourly forecast updated 10/30/2026, 11:43 PM PT

1 active alert

From the National Weather Service for this forecast zone or county

State alerts

Minor1Minimal to no known threat

Hourly forecast

NWS, updated 10/30/2026, 11:43 PM PT

  1. Now56°
  2. 12 AM56°Sat
  3. 1 AM56°
  4. 2 AM56°
  5. 3 AM55°
  6. 4 AM55°
  7. 5 AM55°
  8. 6 AM54°
  9. 7 AM54°
  10. 8 AM55°
  11. 9 AM56°
  12. 10 AM57°
  13. 11 AM58°
  14. 12 PM58°
  15. 1 PM59°
  16. 2 PM59°
  17. 3 PM59°
  18. 4 PM59°
  19. 5 PM59°
  20. 6 PM58°10%
  21. 7 PM57°
  22. 8 PM56°
  23. 9 PM56°12%
  24. 10 PM56°25%
  25. 11 PM55°25%
  26. 12 AM55°43%Sun
  27. 1 AM55°48%
  28. 1 AM55°34%
  29. 2 AM54°18%
  30. 3 AM54°
  31. 4 AM54°
  32. 5 AM53°
  33. 6 AM54°13%
  34. 7 AM54°12%
  35. 8 AM54°
  36. 9 AM55°
  37. 10 AM56°
  38. 11 AM57°
  39. 12 PM58°
  40. 1 PM59°
  41. 2 PM59°
  42. 3 PM59°
  43. 4 PM59°
  44. 5 PM58°
  45. 6 PM57°
  46. 7 PM56°
  47. 8 PM56°
  48. 9 PM55°

10-day forecast

Tap a day for details

  • Today10/30Low 54°High

    Tonight: Mostly cloudy, with a low around 54. West wind around 7 mph.

    Mostly Cloudy
  • Sat10/3148% chance of precipitationLow 53°High 59°

    Saturday: Mostly cloudy, with a high near 59. West southwest wind 6 to 10 mph.

    Saturday Night: A chance of rain showers between 10pm and 3am. Partly cloudy, with a low around 53. West wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Mostly Cloudy
  • Sun11/113% chance of precipitationLow 52°High 60°

    Sunday: Sunny, with a high near 60. Northwest wind 8 to 12 mph.

    Sunday Night: Mostly clear, with a low around 52. North northwest wind 7 to 12 mph.

    Sunny
  • Mon11/223% chance of precipitationLow 54°High 61°

    Monday: Partly sunny, with a high near 61.

    Monday Night: A slight chance of rain showers after 4am. Mostly cloudy, with a low around 54.

    Partly Sunny
  • Tue11/340% chance of precipitationLow 54°High 60°

    Tuesday: A chance of rain showers before 4pm, then a chance of rain. Mostly cloudy, with a high near 60.

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 54.

    Chance Rain Showers then Chance Light Rain
  • Wed11/417% chance of precipitationLow 54°High 61°

    Wednesday: A slight chance of rain before 10am. Partly sunny, with a high near 61.

    Wednesday Night: A slight chance of rain between 10pm and 4am. Mostly cloudy, with a low around 54.

    Slight Chance Light Rain then Partly Sunny
  • Thu11/514% chance of precipitationLow 54°High 61°

    Thursday: Partly sunny, with a high near 61.

    Thursday Night: Mostly cloudy, with a low around 54.

    Partly Sunny
  • Fri11/614% chance of precipitationLow High 62°

    Friday: Mostly sunny, with a high near 62.

    Mostly Sunny
  • Sat11/7Model blendLow 55°High 67°

    Saturday: Mostly sunny. High near 67°. Low that night near 55°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sun11/8Model blendLow 56°High 67°

    Sunday: Partly cloudy. High near 67°. Low that night near 56°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 37.777, -122.495 from the NWS MTR office, updated 10/30/2026, 11:43 PM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KNGZ (Alameda/Alameda NAS, 10 mi), model run 10/30/2026, 7:00 PM PDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now56°Partly Cloudy0%7 mph
  2. 12 AM56°Mostly Cloudy1%7 mph
  3. 1 AM56°Mostly Cloudy1%7 mph
  4. 2 AM56°Mostly Cloudy1%7 mph
  5. 3 AM55°Mostly Cloudy1%7 mph
  6. 4 AM55°Mostly Cloudy1%7 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

Will it rain in San Francisco, CA 94121 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for San Francisco, CA 94121?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 7 to Nov 8) come from the NOAA National Blend of Models, with highs near 67°F. Model guidance this far out often changes.
What time is sunrise and sunset in San Francisco, CA 94121 today?
Sunrise is about 7:33 AM PDT and sunset is about 6:13 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in San Francisco, CA 94121?
At San Francisco Oceanside, the 1991 to 2020 normal high in October is 66°F and the normal low is 53°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.03 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

California hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast tomorrow (San Francisco)
50GoodPM2.5
AQI forecast tomorrow (San Francisco)
44GoodPM2.5

UV index guide · Air quality

Drought

By county

San Francisco County, week of 10/27/2026

No drought or abnormal dryness in this county.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:33 AM
Sunset
6:13 PM
Daylight
10 hr 40 min
Moon
Waning Gibbous 73% lit
First light (civil dawn)
7:06 AM
Last light (civil dusk)
6:40 PM
Moonrise
10:05 PM
Moonset
12:48 PM

Normal October weather

Climate

Normal October high 66°, low 53°, precipitation 0.90 in for the month. 1991 to 2020 normals at San Francisco Oceanside, 3 mi away.

Other places nearby

Data sources

See something wrong? Request a correction

About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

Forecasts, observations and alerts come from the National Weather Service (api.weather.gov). Data can be delayed by minutes to hours, and an observation station may be miles from the place named on this page. This site is not affiliated with NOAA or the National Weather Service.

DatenUS is a private website and is not affiliated with or endorsed by any government agency. We republish public data from the sources listed on this page. Data can be incomplete, delayed or wrong. Always check the original source before you make a decision.

Our servers read this data automatically from government sources. Errors can come from the source itself or from the way we read, process or display it, and we do not guarantee that it is accurate, complete or current. Verify anything important with the official source.

Report an errorRead the full disclaimer