Niagara Falls, NY weather in September
Expect mild weather with frequent rain in Niagara Falls in September, with highs near 72°F and lows near 55°F. Rain falls on about 10 days. Good for outdoor plans.
- Normal high
- 72°F
- Normal low
- 55°F
- Wet days
- 10
- 3.3 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 | 32% | 38% |
| Sunrise / sunset | 6:40 am / 7:51 pm | 7:12 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 am56°Fdew point 53°F
- 9 am64°Fdew point 55°F
- Noon70°Fdew point 54°F
- 3 pm71°Fdew point 54°F
- 6 pm67°Fdew point 54°F
- 9 pm61°Fdew point 54°F
NOAA hourly normals (local standard time) from Niagara Falls Intl Airport (6 mi away); average wind 8 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 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 snow10 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 3.3 in; a dry September brings about 2.5 in and a wet one about 3.9 in (25th and 75th percentiles). About 2 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: 6.1 in
- Driest September2009: 1.8 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 | 10 | 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: Toledo, OH250 mi · high 78°F · 9 wet days
How Niagara Falls ranks in September
- Normal high327th warmest of 378 cities; 9th of 10 in New York
- Wet days322nd driest of 378
- Comfortable days54th most of 342
What to pack for Niagara Falls in September
- A rain jacket or umbrella – rain on about 10 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 Niagara Falls 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 Niagara Falls in September?
About 10 days in September have at least 0.01 in of precipitation, and the normal total is 3.3 in. The wettest September in 1991-2020 was in 1996 (6.1 in); the driest was in 2009 (1.8 in).
Is September a good time to visit Niagara Falls?
September ranks 3rd of 12 months on our comfort score for Niagara Falls (69 out of 100). It has about 16 comfortable days. The best months are May, June and September.
Where the numbers come from
- Temperature: Buffalo (USW00014733), 19 mi ESE of the city center, 693 ft (78 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain, snowfall, snow depth and frost dates: Niagara Falls (USC00305840), 4.3 mi E of the city center, 588 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Niagara Falls Intl Airport (USW00004724), 5.7 mi E of the city center, 585 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Niagara Falls Intl Airport (725287-04724), 6.1 mi E of the city center, 585 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).