New York, USA
Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Buffalo, NY

  • Average high temperature in September: 21.7°C

Warmest month (with highest average high temperature) is July (26.6°C).
Month with lowest average high temperature is January (-0.4°C).

  • Average low temperature in September: 11.9°C

Month with highest average low temperature is July (16.8°C).
Coldest month (with lowest average low temperature) is January (-7.5°C).

  • Average humidity in September: 74%

Month with highest relative humidity is December (77.6%).
Month with lowest relative humidity is May (67.2%).

  • Average rainfall in September: 99.1mm

Wettest month (with highest rainfall) is November (101.9mm).
Driest month (with lowest rainfall) is February (63.2mm).

  • Average rainfall days in September: 11.4 days

Month with highest number of rainy days is January (19.2 days).
Month with lowest number of rainy days is August (10.1 days).

  • Average snowfall in September: 0mm

Month with highest snowfall is December (696mm).
Months with lowest snowfall are June, July, August and September (0mm).

  • Average snowfall days in September: 0 days

Month with highest number of snowfall days is January (16.3 days).
Months with lowest number of snowfall days are May, June, July, August and September (0 days).

  • Average sea temperature in September: 19°C

Best month for swimming (with highest average sea temperature) is August (22°C).
Coldest months (with lowest average sea temperature) are February and March (2°C).

  • Average daylight in September: 12h

Months with longest days are May, June and July (Average daylight: 15h).
Months with shortest days are January and December (Average daylight: 9h).

  • Average sunshine in September: 6.9h

Month with most sunshine is July (Average sunshine: 9.9h).
Month with least sunshine is December (Average sunshine: 2.2h).

  • Average UV index in September: 6

Months with highest UV index are June, July and August (UV index 8).
Months with lowest UV index are January and December (UV index 1).