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05:45
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17:41
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Waxing Gibbous
17:07
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04:40
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View stargazing scoreWeather in San Francisco today, September 25, 2026
San Francisco starts September 25, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Cloud leads the morning, peaking close to 89% near 03:00. Sunshine has little room until later in the day.
Expect highs of 32°C and cooler readings close to 23°C. The air stays humid, with relative humidity between 56% and 100% and the peak around 03:00. Airflow remains manageable, reaching about 2.7 km/h around 12:00.
Through the afternoon wet weather remains a factor, with rain chances near 66% around 22:00. Cloud also stays substantial, close to 93% near 23:00. Visibility holds near 15.0 km, though it can fall to 6.6 km. Daylight runs from 05:45 to 17:41, lasting 11 hours 56 minutes of sunlight today.
Taken together, San Francisco looks wet enough on September 25, 2026 that flexible outdoor plans work best, with temperatures peaking near 32°C.
Frequently asked questions about weather in San Francisco
How warm does it get in San Francisco?
The warmest month in San Francisco is March, with average high temperatures of 35°C. The average temperature during this period is around 28°C.
How cold does it get in San Francisco?
The coldest month in San Francisco is January, with average low temperatures of 20°C. The average temperature during this period is around 26°C.
What is the wettest time of year in San Francisco?
The wettest month in San Francisco is June, with an average of 316mm of precipitation.
What is the driest time of year in San Francisco?
The driest month in San Francisco is February, with an average of 1mm of precipitation.
