🇺🇸 Weather in San Francisco
Current Weather in San Francisco
Dense Fog Advisory issued October 7 at 8:42AM PDT until October 7 at 9:00AM PDT by NWS San Francisco CA
20°C
Feels like 20°C. Sunny.
Map Overlays:
Hourly Forecast for San Francisco
11:00
20°
4%
12:00
21°
3%
13:00
21°
3%
14:00
21°
4%
15:00
20°
4%
16:00
20°
4%
17:00
20°
5%
18:00
19°
5%
19:00
19°
5%
20:00
19°
5%
21:00
19°
5%
22:00
18°
6%
23:00
18°
7%
00:00
17°
8%
01:00
17°
9%
02:00
17°
10%
03:00
16°
10%
04:00
16°
10%
05:00
16°
10%
06:00
17°
10%
07:00
17°
10%
08:00
17°
9%
09:00
18°
7%
10:00
19°
6%
14-Day Forecast for San Francisco
2026-10-07
Sunny
21° /
17°
2026-10-08
Sunny
20° /
16°
2026-10-09
Sunny
19° /
15°
2026-10-10
Sunny
16° /
14°
2026-10-11
Sunny
16° /
13°
2026-10-12
Sunny
18° /
14°
2026-10-13
Sunny
17° /
15°
Additional Forecasts for San Francisco
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 146.0 μg/m³
O₃ (Ozone) 52.0 μg/m³
NO₂ (Nitrogen Dioxide) 15.0 μg/m³
SO₂ (Sulphur Dioxide) 1.2 μg/m³
PM2.5 (Fine particles) 10.6 μg/m³
PM10 (Coarse particles) 14.8 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in San Francisco — FAQ
Answers refreshed each request based on current conditions in San Francisco.
What is the weather like right now in San Francisco?
Right now in San Francisco, United States the temperature is 19.6°C (feels like 20.2°C), with sunny. Relative humidity is 67% and wind is 3.6 km/h.
What is today's high and low temperature in San Francisco?
Today's forecast high in San Francisco is 21.4°C and the overnight low is 17.2°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in San Francisco today?
The chance of precipitation in San Francisco today is 6%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in San Francisco differ from nearby cities?
Even short distances can change temperatures noticeably. San Francisco's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.