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The temperatures in San Francisco in January are quite cold with temperatures between 7°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in San Francisco during the month of January. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in San Francisco in January 2025.
If you’re planning to visit San Francisco in the near future, we highly recommend that you review the 14 day weather forecast for San Francisco before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 7° | 4 | 27 | 0 | 63 mm | Good | San Francisco in January |
| February | 16° / 7° | 4 | 24 | 0 | 61 mm | Good | San Francisco in February |
| March | 17° / 8° | 5 | 26 | 0 | 62 mm | Good | San Francisco in March |
| April | 18° / 9° | 2 | 28 | 0 | 22 mm | Good | San Francisco in April |
| May | 20° / 10° | 1 | 30 | 0 | 13 mm | Good | San Francisco in May |
| June | 23° / 12° | 0 | 30 | 0 | 6 mm | Perfect | San Francisco in June |
| July | 25° / 14° | 0 | 31 | 0 | 3 mm | Perfect | San Francisco in July |
| August | 25° / 14° | 0 | 31 | 0 | 3 mm | Perfect | San Francisco in August |
| September | 25° / 14° | 0 | 30 | 0 | 4 mm | Perfect | San Francisco in September |
| October | 23° / 13° | 1 | 30 | 0 | 26 mm | Perfect | San Francisco in October |
| November | 18° / 10° | 3 | 27 | 0 | 37 mm | Good | San Francisco in November |
| December | 14° / 8° | 4 | 27 | 0 | 55 mm | Good | San Francisco in December |