Typical Weather in San Jose, CA in December
58° F Avg High
42° F Avg Low
6 Rainy Days
☀️ Temperature Summary
Highs in December are typically around 58°F, which is cooler than usual in San Jose. You can expect overnight lows near 42°F most days. This is the coldest month of the year in San Jose.
Despite it being the coolest month of the year, December is still 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 December. 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