Buffalo, New York weather in December

Averages from 2021–2025 (155 days of record).

Average high: 39°F
Average low: 29°F
Rainy days: ~16 per month
Total precipitation: 4.2 in
Warmest recorded: 63°F
Coldest recorded: 4°F

Expect December days in Buffalo, New York to top out around 39°F and cool to about 29°F overnight, with roughly 16 days of measurable rain across the month. In recent years December has ranged from 4°F to 63°F.

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Current Buffalo, New York forecast → · Historical data by Open-Meteo (ERA5).