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

September weather forecast and climate
Buffalo, NY

A view of the Niagara square with the McKinley Monument in Buffalo, New York
A view of the Niagara square with the McKinley Monument in Buffalo, New York
  • Average high temperature in September: 71.1°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.2°F).

  • Average low temperature in September: 53.4°F

The month with the highest average low temperature is July (62.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

  • Average humidity in September: 74%

The month with the highest relative humidity is December (77.6%).
The month with the lowest relative humidity is May (67.2%).

  • Average rainfall in September: 3.9"

The wettest month (with the highest rainfall) is November (4").
The driest month (with the lowest rainfall) is February (2.5").

  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is January (19.2 days).
The month with the lowest number of rainy days is August (10.1 days).

  • Average snowfall in September: 0"

The month with the highest snowfall is December (27.4").
Months with the lowest snowfall are June, July, August and September (0").

  • Average snowfall days in September: 0 days

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

  • Average sea temperature in September: 69.4°F

The best month for swimming (with the highest average sea temperature) is August (74.2°F).
The coldest month (with the lowest average sea temperature) is February (34.9°F).

  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 6.9h

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

  • Average UV index in September: 6

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

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