Weather in South San Francisco in January
South San Francisco, United States averages a high of 13.7°C (56.7°F) and low of 7.6°C (45.7°F) in January, with 9 rain days and 7.2 hours of daily sunshine. Travel score: 61.9/100 (Good). The best time to visit South San Francisco is September.
High
14°C57°F
Low
8°C46°F
🌧️
9
rain days
☀️
7.2
hrs/day sunshine
💧
84%
humidity
62— Good
January in South San Francisco is cool and occasionally wet — good for most activities.
What are the average temperatures in South San Francisco?
How much does it rain in South San Francisco in January?
South San Francisco receives an average of 96.6mm of rainfall across 9 rainy days in January. The annual total is 491.2mm.
What should I pack for South San Francisco in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 14°C
🧶
Sweaters and warm layers
Layer up for comfort
Traveling to United States in January?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31