Buffalo, New York weather in May

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

Average high: 66°F
Average low: 49°F
Rainy days: ~12 per month
Total precipitation: 3.5 in
Warmest recorded: 85°F
Coldest recorded: 34°F

Expect May days in Buffalo, New York to top out around 66°F and cool to about 49°F overnight, with roughly 12 days of measurable rain across the month. In recent years May has ranged from 34°F to 85°F.

Other months

January February March April June July August September October November December

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