Buffalo, NY weather in September
Buffalo is mild in September, with frequent rain: highs average 72°F and nights drop to about 55°F. Rain falls on about 11 days. A good month for most outdoor plans.
- Normal high
- 72°F
- Normal low
- 55°F
- Wet days
- 11
- 4.1 in total
- Muggy days
- 2
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 77°F | 66°F |
| Normal low | 59°F | 49°F |
| Chance of a wet day | 34% | 40% |
| Sunrise / sunset | 6:40 am / 7:50 pm | 7:11 am / 6:59 pm |
| Daylight | 13.2 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical September day
- 6 am57°Fdew point 53°F
- 9 am64°Fdew point 54°F
- Noon69°Fdew point 54°F
- 3 pm70°Fdew point 54°F
- 6 pm67°Fdew point 54°F
- 9 pm62°Fdew point 54°F
NOAA hourly normals (local standard time) from Buffalo (8 mi away); average wind 9 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph4 of 30
- Hot dayshigh 90°F or more0 of 30
- Muggy daysdaily mean dew point 65°F or more2 of 30
- Wet daysat least 0.01 in of rain or melted snow11 of 30
- Notable rainat least 0.10 in7 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 4.1 in; a dry September brings about 3.3 in and a wet one about 4.8 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202002: average high 77°F
- Coolest September2006: average high 68°F
- Wettest September1996: 7.5 in
- Driest September1995: 1.3 in
- Highest reading92°F (September 6, 2007)
- Lowest reading32°F (September 30, 1991)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 79°F | 72°F | 60°F |
| Normal low | 62°F | 55°F | 44°F |
| Wet days | 10 | 11 | 14 |
| Comfortable days | 11 | 16 | 10 |
| Daylight | 13.9 h | 12.5 h | 11.0 h |
Highs change by -7°F from August and -12°F into October.
Nearby alternatives in September
- Warmer: Allentown, PA235 mi · high 77°F · 10 wet days
How Buffalo ranks in September
- Normal high326th warmest of 378 cities; 8th of 10 in New York
- Wet days333rd driest of 378
- Comfortable days49th most of 342
What to pack for Buffalo in September
- A rain jacket or umbrella – rain on about 11 days
Heating and cooling
September has 114 heating degree days and 66 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Buffalo in September?
The normal high is 72°F and the normal low is 55°F. From 1991 to 2020 the hottest September reading was 92°F (September 6, 2007).
Does it rain a lot in Buffalo in September?
About 11 days in September have at least 0.01 in of precipitation, and the normal total is 4.1 in. The wettest September in 1991-2020 was in 1996 (7.5 in); the driest was in 1995 (1.3 in).
Is September a good time to visit Buffalo?
September ranks 3rd of 12 months on our comfort score for Buffalo (69 out of 100). It has about 16 comfortable days. The best months are May, June and September.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Buffalo (USW00014733), 8.3 mi ENE of the city center, 693 ft (91 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Buffalo Niagara International Airpor (725280-14733), 8.1 mi ENE of the city center, 709 ft (107 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).