Weather in San Francisco, California for October 2025
Until now, October 2025 in San Francisco is cooler than usual, with temperatures averaging 16.3 °F, this is -2.9 °F below the typical seasonal average.
The forecast for the upcoming days in San Francisco predicts a temperature of 18.5 °F, which is slightly above the historical average.
In general, the average temperature in San Francisco at the beginning of October is 21.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.7 °F by the end of October.
With an average of 4 rainy days, San Francisco experiences minimal rainfall in October.
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San Francisco Weather October
Temperatures trend during October in San Francisco
October weather in San Francisco day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Sunny | 22° /14° | 10.3 mm | 6 | |
| Oct. 2 | Sunny | 22° /13° | 0 mm | 6 | |
| Oct. 3 | Sunny | 22° /13° | 0 mm | 6 | |
| Oct. 4 |  Overcast | 21° /13° | 0 mm | 5 | |
| Oct. 5 | Sunny | 23° /14° | 0 mm | 6 | |
| Oct. 6 | Overcast | 21° /14° | 0 mm | 5 | |
| Oct. 7 |  Partly cloudy | 21° /13° | 0 mm | 5 | |
| Oct. 8 |  Cloudy | 18° /12° | 0 mm | 5 | |
| Oct. 9 | Sunny | 18° /12° | 0.2 mm | 4 | |
| Oct. 10 | Sunny | 18° /11° | 0.1 mm | 4 | |
| Oct. 11 | Sunny | 18° /11° | 0 mm | 5 | |
| Oct. 12 | Sunny | 18° /11° | 0 mm | 5 | |
| Oct. 13 |  Mist | 17° /12° | 7.8 mm | 4 | |
| Oct. 14 | Sunny | 18° /11° | 0.9 mm | 4 | |
| Oct. 15 | Sunny | 19° /12° | 0 mm | 5 | |
| Oct. 16 | Fog | 19° /12° | 0 mm | 5 | |
| Oct. 17 | Fog | 19° /11° | 0.4 mm | 4 | |
| Oct. 18 | Sunny | 21° /11° | 0 mm | 5 | |
| Oct. 19 | Overcast | 22° /12° | 0 mm | 5 | |
| Oct. 20 |  Heavy rain at times | 21° /13° | 1.2 mm | 5 | |
| Oct. 21 |  Moderate rain at times | 18° /12° | 0.2 mm | 4 | |
| Oct. 22 | Moderate or heavy rain shower | 16° /12° | 1.7 mm | 4 | |
| Oct. 23 | Overcast | 17° /11° | 0.5 mm | 4 | |
| Oct. 24 | Fog | 19° /12° | 15 mm | 5 | |
| Oct. 25 | Overcast | 17° /12° | 1.7 mm | 4 | |
| Oct. 26 | Cloudy | 17° /11° | 0 mm | 4 | |
| Oct. 27 | Sunny | 18° /11° | 0 mm | 4 | |
| Oct. 28 | Sunny | 19° /11° | 0 mm | 5 | |
| Oct. 29 | Sunny | 21° /14° | 0 mm | 0.9 | |
| Oct. 30 | Fog | 13° /12° | 0 mm | 0.8 | |
| Oct. 31 | Mist | 19° /12° | 0 mm | 0.8 | |
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San Francisco in October - FAQ
October rainfall patterns in San Francisco
UV exposure in San Francisco during October
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Where is San Francisco?Get accurate weather forecasts for San Francisco, located at latitude 37.775 and longitude -122.419. Stay updated with localized weather information tailored for San Francisco.