City and County of San Francisco (San Francisco)
January
Weather in City and County of San Francisco, California for January 2027
Your guide to City and County of San Francisco weather in January - trends and predictions
In general, the average temperature in City and County of San Francisco at the beginning of January is 12.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 13.2 °C by the end of January.
City and County of San Francisco experiences moderate rainfall in January, with an average of 7 rainy days and a total precipitation of 104.8 mm.
Is January a good time to visit City and County of San Francisco? check out the best time to travel to City and County of San Francisco page.
✨ Is January a good time to visit City and County of San Francisco? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
24
Dry days
7
Rainy days
0
Snow days
13°/8°
Temperatures
15 km/h
Avg max wind
75 %
Avg humidity
City and County of San Francisco Weather January
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Temperatures trend during January in City and County of San Francisco
See the weather trend as well as the moving average line
January weather in City and County of San Francisco day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Light rain | 13° /8° | 4.3 mm | 2.2 | |
| Jan. 2 | Light rain | 13° /8° | 3.1 mm | 2.2 | |
| Jan. 3 |  Moderate rain | 13° /9° | 14.4 mm | 2.2 | |
| Jan. 4 | Moderate rain | 13° /8° | 18 mm | 2.2 | |
| Jan. 5 |  Patchy rain possible | 13° /8° | 2.2 mm | 2.3 | |
| Jan. 6 | Light rain shower | 12° /8° | 1.5 mm | 2.3 | |
| Jan. 7 | Patchy rain possible | 13° /9° | 2 mm | 2.3 | |
| Jan. 8 | Light rain | 13° /8° | 3 mm | 2.3 | |
| Jan. 9 | Light rain | 14° /7° | 4.9 mm | 2.3 | |
| Jan. 10 | Light rain | 12° /7° | 3.9 mm | 2.4 | |
| Jan. 11 | Light rain | 14° /7° | 2.7 mm | 2.4 | |
| Jan. 12 |  Sunny | 13° /8° | 0.1 mm | 2.4 | |
| Jan. 13 | Light rain | 14° /8° | 4.6 mm | 2.4 | |
| Jan. 14 | Light rain | 15° /9° | 4.7 mm | 2.5 | |
| Jan. 15 | Patchy rain possible | 14° /8° | 2.2 mm | 2.5 | |
| Jan. 16 | Light rain | 14° /9° | 3.6 mm | 2.5 | |
| Jan. 17 |  Cloudy | 14° /8° | 0.1 mm | 2.6 | |
| Jan. 18 | Sunny | 14° /9° | 0.5 mm | 2.6 | |
| Jan. 19 | Patchy rain possible | 13° /8° | 1.9 mm | 2.6 | |
| Jan. 20 | Light rain | 14° /7° | 3.3 mm | 2.7 | |
| Jan. 21 | Sunny | 13° /8° | 0.1 mm | 2.7 | |
| Jan. 22 | Light rain | 14° /9° | 5.5 mm | 2.7 | |
| Jan. 23 | Sunny | 14° /7° | 0 mm | 2.8 | |
| Jan. 24 | Patchy rain possible | 13° /7° | 1.4 mm | 2.8 | |
| Jan. 25 | Sunny | 13° /7° | 0.1 mm | 2.9 | |
| Jan. 26 | Patchy rain possible | 14° /7° | 1.6 mm | 2.9 | |
| Jan. 27 | Light rain | 14° /8° | 4.1 mm | 3 | |
| Jan. 28 | Patchy rain possible | 13° /9° | 2.1 mm | 3 | |
| Jan. 29 | Patchy rain possible | 12° /7° | 0.5 mm | 3 | |
| Jan. 30 |  Partly cloudy | 13° /7° | 0 mm | 3.1 | |
| Jan. 31 | Moderate rain | 13° /8° | 8.5 mm | 3 | |
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Important Notice
Our weather forecast for City and County of San Francisco in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the City and County of San Francisco forecast closer to your planned date for the most up-to-date weather information.
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City and County of San Francisco in January - FAQ
What are the expected maximum and minimum temperatures in City and County of San Francisco during January?
During January, expect a variety of temperatures with highs around 13° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in City and County of San Francisco during January?
Significant rainfall exceeding 104.8 mm is expected in City and County of San Francisco during January, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in City and County of San Francisco during January?
The average wind speed in City and County of San Francisco during January is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in City and County of San Francisco
Explore the daily rainfall trends and prepare for City and County of San Franciscos January weather 💧
Typically, City and County of San Francisco has 7 rainy days in January with a total of 104.8 mm of rainfall.
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