Typical Weather in New Haven, CT in December
43° F Avg High
29° F Avg Low
6 Rainy Days
☀️ Temperature Summary
Highs in December are typically around 43°F, which is cooler than usual in New Haven. You can expect overnight lows near 29°F most days. Daily high temperatures can range between 50°F and 39°F for the month of December.
December is a great time to visit New Haven, 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 18% chance of rain for any given day in December. It's one of the drier months of the year for New Haven, with total rainfall for the month around 4 inches.
Rainfall Throughout the Year
Planning a trip to New Haven? Try our free trip weather planner