Weather in San Francisco, California for January 2026
Beach Hazards Statement - See hour by hour.
Until now, January 2026 in San Francisco is slightly cooler than the historical average by -0.8 °F.
The forecast for the next days in San Francisco predicts temperatures to be around 14 °F, close to the historical average.
In general, the average temperature in San Francisco at the beginning of January is 13 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 13.7 °F by the end of January.
San Francisco experiences heavy rainfall in January, with over 20 rainy days and an average total precipitation 94.9 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
More
San Francisco Weather January
Temperatures trend during January in San Francisco
January weather in San Francisco day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Sunny | 13° /7° | 4.3 mm | 3 | |
| Jan. 2 |  Patchy rain possible | 13° /8° | 3.1 mm | 3 | |
| Jan. 3 | Light rain shower | 13° /9° | 14.4 mm | 3 | |
| Jan. 4 |  Moderate or heavy rain shower | 13° /8° | 18 mm | 3 | |
| Jan. 5 |  Partly cloudy | 13° /8° | 2.2 mm | 3 | |
| Jan. 6 | Light rain shower | 13° /8° | 1.5 mm | 3 | |
| Jan. 7 | Sunny | 13° /8° | 2 mm | 3 | |
| Jan. 8 |  Overcast | 14° /8° | 3 mm | 3 | |
| Jan. 9 | Sunny | 14° /6° | 4.9 mm | 3 | |
| Jan. 10 | Partly cloudy | 13° /7° | 3.9 mm | 3 | |
| Jan. 11 | Sunny | 16° /6° | 0 mm | 0.5 | |
| Jan. 12 |  Mist | 9° /7° | 0 mm | 0.5 | |
| Jan. 13 | Fog | 15° /6° | 0 mm | 0.5 | |
| Jan. 14 | Sunny | 16° /11° | 0 mm | 0.5 | |
| Jan. 15 | Sunny | 17° /11° | 0 mm | 0 | |
| Jan. 16 | Sunny | 17° /11° | 0 mm | 4 | |
| Jan. 17 | Sunny | 16° /11° | 0 mm | 4 | |
| Jan. 18 | Sunny | 15° /10° | 0 mm | 4 | |
| Jan. 19 | Sunny | 15° /10° | 0 mm | 4 | |
| Jan. 20 | Sunny | 14° /10° | 0 mm | 4 | |
| Jan. 21 | Sunny | 14° /10° | 0 mm | 4 | |
| Jan. 22 | Patchy rain possible | 13° /11° | 0.7 mm | 3 | |
| Jan. 23 | Patchy rain possible | 12° /9° | 0.1 mm | 3 | |
| Jan. 24 | Sunny | 11° /7° | 0 mm | 3 | |
| Jan. 25 | Sunny | 14° /6° | 0.1 mm | 4 | |
| Jan. 26 | Overcast | 14° /7° | 2 mm | 4 | |
| Jan. 27 | Sunny | 15° /7° | 5 mm | 4 | |
| Jan. 28 | Overcast | 13° /8° | 2.5 mm | 3 | |
| Jan. 29 | Patchy rain possible | 13° /7° | 0.6 mm | 4 | |
| Jan. 30 | Partly cloudy | 14° /7° | 0 mm | 4 | |
| Jan. 31 |  Moderate rain | 13° /7° | 10.2 mm | 3 | |
| Next | |||||
San Francisco in January - FAQ
What are the expected maximum and minimum temperatures in San Francisco during January?
How much rainfall should be expected in San Francisco during January?
What are the typical wind conditions in San Francisco during January?
January rainfall patterns in San Francisco
Quick links
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.