San Francisco, CA Weather Forecast

The forecast is bbbrraaaiiinnsss....

🌪 TROPICAL ACTIVITY: TROPICAL STORM FAY Sustained winds 35 kt. Track it on the zombie radar or see NHC advisories.
🌪 TROPICAL ACTIVITY: HURRICANE ODALYS Sustained winds 75 kt. Track it on the zombie radar or see NHC advisories.
🌪 TROPICAL ACTIVITY: HURRICANE POLO Sustained winds 140 kt. Track it on the zombie radar or see NHC advisories.
Clear night
63°

nniiighhht... hunnnttt tiiime

  • Humidity: 74%
  • Visibility: 2.3 Mi
  • Wind: WNW at 9 MPH
  • Dew Point: 0° F
  • Cloud Cover: 1%
  • UV Index: 0 - Low
  • Air Quality: Fair
  • Moon: Waxing Gibbous (94% full) · up 5:39pm, down 4:50am

☀ Solar Outbreak Watch: Quiet · largest flare C1.1 · Kp 3 The sun naps. The horde does not. full report →

🏔 Ground Watch: M2.6 earthquake 84 mi away — 2 km NW of Hollister, CA, 13h ago A small one. The ground is restless, but so far only the ground. USGS →

Today's high of 63° F makes this one of the coldest September 23rds since 2005.

WedThuFriSatSunMon

Zombie Survival Index™

35/100 — HIGH RISK Sshaarpen thee maccheetee

  • Mild temps: standard shamble speed
  • Hazy: watch your flanks
  • Darkness: their favorite

Today's undead advice: Count your group at dusk. Count again at dawn.

Rule #5 Silence is golden After dark, sound carries — and so does the smell of the living. all the Rules of Survival →

🌡 The weather here, in general

San Francisco barely has a winter. The warmest month (September) averages 70°F and the coldest nights still sit around 46°F, a span of only 24 degrees. The year here is measured in humidity and storms rather than temperature.

It essentially never gets hot here: fewer than five days a year reach 90°F. Cold, not heat, is the season worth preparing for.

Rainfall averages about 23 inches a year, wettest in December and driest in July.

MonthAvg highAvg lowRainSnow
Jan57°46° 4.9"
Feb59°46° 3.5"
Mar59°48° 3.7"
Apr61°50° 1.3"
May63°52° 0.7"
Jun67°55° 0.1"
Jul67°56° 0"
Aug68°58° 0"
Sep70°58° 0.1"
Oct69°55° 1.1"
Nov62°50° 2.3"
Dec56°46° 5.1"

Averages from ten years of observed daily records (2015–2024) for this location. They describe what is typical, not what will happen — for that, see the forecast above.

📷 Golden Hour

  • Golden hour: 6:29pm - 7:04pm (dawn: 6:58am - 7:32am)
  • Blue hour: 7:04pm - 7:30pm (dawn: 6:32am - 6:58am)
  • Sun sets: 270° W (rises 90° E)
  • Dark sky: 8:31pm – 5:30am · next new moon Oct 11 (17d)

Overcast Sunset odds 20/100 Solid grey lid. The sun is not showing up for this one.

Waxing Gibbous
94% · full Sep 26

Sun & moon: sunrisesunset.io · cloud layers: Open-Meteo · astro & Milky Way planner →

Weather Details

Thu

Clear night

High: 83° F
|
Low: 61° F
nniiighhht... hunnnttt tiiime
Low confidence ±10.9°
Weather Details

Fri

Clear night

High: 72° F
|
Low: 60° F
nniiighhht... hunnnttt tiiime
Moderate confidence ±3.6°
Weather Details

Sat

Clear night

High: 63° F
|
Low: 57° F
nniiighhht... hunnnttt tiiime
High confidence ±2.2°
Weather Details

Sun

Mostly cloudy night

High: 64° F
|
Low: 58° F
ddaarrkk cclouudds
High confidence ±1.5°
Weather Details

Mon

Clear night

High: 65° F
|
Low: 56° F
nniiighhht... hunnnttt tiiime
Low confidence ±6.1°
Weather Details


High: ° F
|
Low: ° F

Will it rain on your plans?

Weather Details

Wed Sep 23 11pm 63° F

Clear night
nniiighhht... hunnnttt tiiime

  • Cloud Cover: 1%
  • Dew Point: 0° F
  • Humidity: 74%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 2.3 Mi
  • Wind: 4 MPH / S
Weather Details

Thu Sep 24 2am 62° F

Clear night
nniiighhht... hunnnttt tiiime

  • Cloud Cover: 3%
  • Dew Point: 0° F
  • Humidity: 78%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 5 Mi
  • Wind: 4 MPH / SSE
Weather Details

Thu Sep 24 5am 61° F

Clear night
nniiighhht... hunnnttt tiiime

  • Cloud Cover: 5%
  • Dew Point: 0° F
  • Humidity: 86%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 6.2 Mi
  • Wind: 3 MPH / SSW
Weather Details

Thu Sep 24 8am 62° F

Sunny
Ssssuuunnnny sqquuiinnnttt

  • Cloud Cover: 4%
  • Dew Point: 0° F
  • Humidity: 90%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 6.2 Mi
  • Wind: 3 MPH / SSE
Weather Details

Thu Sep 24 11am 76° F

Cloudy
CLLOOUUUDDSSS LLLOOOTTTSSS

  • Cloud Cover: 94%
  • Dew Point: 0° F
  • Humidity: 70%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 6.2 Mi
  • Wind: 5 MPH / SSW
Weather Details

Thu Sep 24 2pm 83° F

Partly cloudy
Ppaarrttt cclouudd

  • Cloud Cover: 49%
  • Dew Point: 0° F
  • Humidity: 70%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 6.2 Mi
  • Wind: 10 MPH / SW
Weather Details

Thu Sep 24 5pm 77° F

Cloudy
CLLOOUUUDDSSS LLLOOOTTTSSS

  • Cloud Cover: 96%
  • Dew Point: 0° F
  • Humidity: 61%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 6.2 Mi
  • Wind: 9 MPH / WSW
Weather Details

Thu Sep 24 8pm 66° F

Mostly cloudy night
ddaarrkk cclouudds

  • Cloud Cover: 100%
  • Dew Point: 0° F
  • Humidity: 64%
  • Precipitation: None
  • UV Index: 0 - Unknown
  • Visibility: 6.2 Mi
  • Wind: 5 MPH / SW

7-Day Meteogram

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