See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
23°
Misty and Humid
Feels Like: 22°
Min: 23°
Max: 28°
The next few hours will be foggy and humid, with today reaching 28°C and dropping to 23°C. The coming days will be light rain throughout the day and possible thunderstorms until night.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:52
Sunrise
17:48
Sunset
Moon
Waxing Gibbous
17:15
Moonrise
04:47
Moonset
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View stargazing scoreWeather in San Francisco today, September 25, 2026
San Francisco looks damp on September 25, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Wetter spells lean into the morning, when rain odds reach about 90% near 10:00. Skies look heaviest around 06:00, with cover close to 94%.
Expect highs of 28°C and cooler readings close to 23°C. Moisture in the air spans 81%-100%, with the highest values around 06:00. A lighter breeze peaks around 21:00 near 2.1 km/h.
The second half of the day still looks unsettled, with rain probability around 96% by 16:00. Dense cloud near 100% at 23:00 keeps the feel grey. Horizontal visibility sits around 10.6 km, briefly nearer 0.9 km. Daylight runs from 05:52 to 17:48, lasting 11 hours 55 minutes of sunlight today.
Overall, San Francisco on September 25, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 96% and the high sits around 28°C.
Frequently asked questions about weather in San Francisco
How warm does it get in San Francisco?
The warmest month in San Francisco is May, with average high temperatures of 39°C. The average temperature during this period is around 31°C.
How cold does it get in San Francisco?
The coldest month in San Francisco is January, with average low temperatures of 19°C. The average temperature during this period is around 24°C.
What is the wettest time of year in San Francisco?
The wettest month in San Francisco is September, with an average of 232mm of precipitation.
What is the driest time of year in San Francisco?
The driest month in San Francisco is March, with an average of 29mm of precipitation.
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