Typical Weather in San Jose, CA in January
59° F Avg High
42° F Avg Low
6 Rainy Days
☀️ Temperature Summary
Highs in January are typically around 59°F, which is cooler than usual in San Jose. Overnight lows can reach 42°F.
January is a great time to visit San Jose, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
You can expect about a 20% chance of rain for any given day in January. It's one of the rainier months of the year for San Jose, with total rainfall for the month around 3 inches.
Rainfall Throughout the Year
Planning a trip to San Jose? Try our free trip weather planner
📍 Nearby Cities in January
59°F
/
38°F
42°F
/
24°F
38°F
/
24°F
72°F
/
44°F
47°F
/
35°F
56°F
/
42°F
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