New York weather in September: New York, New York: normal highs, lows, rain and records for September
New York in September has a normal high of 76°F and a normal low of 62°F, a daily mean of 69°F, falling from 81°F on the 1st to 71°F by the 30th. Measurable precipitation falls on 9 days in a normal September, 4.31 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 17°C, 109 mm of precipitation in September.
- NOAA stationNew York Central Park Tower
- Station IDUSW00094728
- Location40.78°N 73.97°W
- Elevation130 ft (40 m)
- From the center8 miles
- Population8,478,072
- Jan 40° 28°
- Feb 42° 30°
- Mar 50° 36°
- Apr 62° 46°
- May 71° 55°
- Jun 80° 64°
- Jul 85° 70°
- Aug 83° 69°
- Sep 76° 62°
- Oct 65° 51°
- Nov 54° 42°
- Dec 44° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is New York in September?
The normal high is 76°F and the normal low 62°F, for a daily mean of 69.2°F. September is 6.9°F cooler than August and 11.3°F warmer than October. September is the 4th warmest month of the year in New York and the 6th wettest. Across the month the normal high falls 10°F, from 81°F on September 1 to 71°F on September 30. From one year to the next September's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 67°F and 71°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 81°F | 67°F | 29% | 20% |
| September 8 | 79°F | 65°F | 28% | 19% |
| September 15 | 77°F | 63°F | 29% | 19% |
| September 22 | 74°F | 60°F | 30% | 20% |
| September 30 | 71°F | 57°F | 31% | 20% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 81°F | 67°F | 29% | 20% | 13 h 10 min |
| September 2 | 81°F | 66°F | 29% | 19% | 13 h 10 min |
| September 3 | 80°F | 66°F | 29% | 19% | 13 h |
| September 4 | 80°F | 66°F | 29% | 19% | 13 h |
| September 5 | 80°F | 66°F | 29% | 19% | 13 h |
| September 6 | 80°F | 65°F | 28% | 19% | 13 h |
| September 7 | 79°F | 65°F | 28% | 19% | 12 h 50 min |
| September 8 | 79°F | 65°F | 28% | 19% | 12 h 50 min |
| September 9 | 79°F | 65°F | 28% | 19% | 12 h 50 min |
| September 10 | 78°F | 64°F | 28% | 19% | 12 h 50 min |
| September 11 | 78°F | 64°F | 28% | 19% | 12 h 40 min |
| September 12 | 78°F | 64°F | 28% | 19% | 12 h 40 min |
| September 13 | 77°F | 63°F | 28% | 19% | 12 h 40 min |
| September 14 | 77°F | 63°F | 29% | 19% | 12 h 30 min |
| September 15 | 77°F | 63°F | 29% | 19% | 12 h 30 min |
| September 16 | 76°F | 62°F | 29% | 19% | 12 h 30 min |
| September 17 | 76°F | 62°F | 29% | 19% | 12 h 30 min |
| September 18 | 76°F | 62°F | 29% | 19% | 12 h 20 min |
| September 19 | 75°F | 61°F | 29% | 19% | 12 h 20 min |
| September 20 | 75°F | 61°F | 29% | 19% | 12 h 20 min |
| September 21 | 74°F | 61°F | 30% | 19% | 12 h 20 min |
| September 22 | 74°F | 60°F | 30% | 20% | 12 h 10 min |
| September 23 | 74°F | 60°F | 30% | 20% | 12 h 10 min |
| September 24 | 73°F | 60°F | 30% | 20% | 12 h 10 min |
| September 25 | 73°F | 59°F | 30% | 20% | 12 h 10 min |
| September 26 | 72°F | 59°F | 31% | 20% | 12 h |
| September 27 | 72°F | 58°F | 31% | 20% | 12 h |
| September 28 | 72°F | 58°F | 31% | 20% | 12 h |
| September 29 | 71°F | 58°F | 31% | 20% | 11 h 50 min |
| September 30 | 71°F | 57°F | 31% | 20% | 11 h 50 min |
- Normal high
- 76°FSeptember average
- Normal low
- 62°FSeptember average
- Precipitation
- 4.31 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 25
- Days at 80°F or more
- 10
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094728; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in New York in September?
On a given September day the chance of 0.01 inch or more is 29% on average, highest around September 30 (31%). In all, 4.31 in falls on 9 days of a normal September, 1 of them with an inch or more.
In a normal September in New York, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094728.
What are the records for September in New York?
The warmest September temperature on this station's record (since 1869) is 102°F, on September 2, 1953; the coldest is 39°F, on September 30, 1912. The wettest September brought 16.85 in (1882).
The September mean against the 1991-2020 normal of 69.2°F: 2021 70.3°F (+1.1), 2022 69.5°F (+0.3), 2023 69.4°F (+0.2), 2024 68.8°F (−0.4), 2025 70.6°F (+1.4), 2026 68.4°F (−0.8). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.3°F | +1.1°F | 10.03 in |
| 2022 | 69.5°F | +0.3°F | 4.10 in |
| 2023 | 69.4°F | +0.2°F | 14.25 in |
| 2024 | 68.8°F | −0.4°F | 1.58 in |
| 2025 | 70.6°F | +1.4°F | 2.76 in |
| 2026 | 68.4°F | −0.8°F | 5.31 in |
Source: records: ACIS, station USW00094728; recent months: ACIS, station USW00094728. Records and recent months use complete months only.
How does September in New York compare across New York?
Across the 131 places PlainClimate covers in New York, September normal highs run from 64°F in Cooperstown to 78°F in Wantagh; New York's is 76°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.