New York City, NY weather in September
Expect mild weather with some rain in New York City in September, with highs near 76°F and lows near 62°F. Rain falls on about 9 days. Good for outdoor plans.
- Normal high
- 76°F
- Normal low
- 62°F
- Wet days
- 9
- 4.3 in total
- Muggy days
- 6
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 81°F | 71°F |
| Normal low | 67°F | 57°F |
| Chance of a wet day | 29% | 31% |
| Sunrise / sunset | 6:23 am / 7:28 pm | 6:51 am / 6:40 pm |
| Daylight | 13.1 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 am66°Fdew point 57°F
- 9 am69°Fdew point 57°F
- Noon74°Fdew point 56°F
- 3 pm75°Fdew point 56°F
- 6 pm73°Fdew point 57°F
- 9 pm70°Fdew point 58°F
NOAA hourly normals (local standard time) from New York Laguardia Airport (8 mi away); average wind 10 mph; clear or few clouds in 58% of daytime hours, mostly cloudy or overcast in 34%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F14 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph8 of 30
- Hot dayshigh 90°F or more1 of 30
- Muggy daysdaily mean dew point 65°F or more6 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in6 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 4.3 in; a dry September brings about 2.8 in and a wet one about 5.3 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, 1991-20202015: average high 83°F
- Coolest September2000: average high 73°F
- Wettest September2004: 11.5 in
- Driest September2005: 0.5 in
- Highest reading97°F (September 8, 2015)
- Lowest reading43°F (September 29, 2000)
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 | 83°F | 76°F | 65°F |
| Normal low | 69°F | 62°F | 51°F |
| Wet days | 10 | 9 | 10 |
| Comfortable days | 4 | 14 | 12 |
| Daylight | 13.8 h | 12.5 h | 11.1 h |
Highs change by -7°F from August and -11°F into October.
Nearby alternatives in September
- Cooler: Worcester, MA156 mi · high 71°F · 10 wet days
How New York City ranks in September
- Normal high254th warmest of 378 cities; 2nd of 10 in New York
- Wet days237th driest of 378
- Comfortable days107th most of 342
What to pack for New York City in September
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
September has 32 heating degree days and 159 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is New York City in September?
The normal high is 76°F and the normal low is 62°F. From 1991 to 2020 the hottest September reading was 97°F (September 8, 2015).
Does it rain a lot in New York City in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 4.3 in. The wettest September in 1991-2020 was in 2004 (11.5 in); the driest was in 2005 (0.5 in).
Is September a good time to visit New York City?
September ranks 3rd of 12 months on our comfort score for New York City (66 out of 100). It has about 14 comfortable days and about 1 day at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall and frost dates: New York Cntrl Pk Twr (USW00094728), 4.9 mi NNE of the city center, 130 ft (95 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snow depth and humidity and wind by hour: New York Laguardia Airport (USW00014732), 8.0 mi NE of the city center, 11 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Teterboro Airport (USW00094741), 9.8 mi NNW of the city center, 9 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: La Guardia Airport (725030-14732), 8.0 mi NE of the city center, 10 ft . Hourly observations, 1991-2020.