Westchester County Airport weather in September: Westchester County Airport, New York: normal highs, lows, rain and records for September
Westchester County Airport in September has a normal high of 74°F and a normal low of 57°F, a daily mean of 65°F, falling from 79°F on the 1st to 69°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 4.94 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 14°C, 125 mm of precipitation in September.
- NOAA stationWestchester County Airport
- Station IDUSW00094745
- Location41.07°N 73.71°W
- Elevation379 ft (116 m)
- Jan 37° 22°
- Feb 40° 24°
- Mar 48° 31°
- Apr 59° 40°
- May 69° 50°
- Jun 78° 59°
- Jul 83° 65°
- Aug 81° 64°
- Sep 74° 57°
- Oct 63° 46°
- Nov 52° 36°
- Dec 42° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Westchester County Airport in September?
The normal high is 74°F and the normal low 57°F, for a daily mean of 65.4°F. September is 7.0°F cooler than August and 11.2°F warmer than October. September is the 4th warmest month of the year in Westchester County Airport and the wettest. Across the month the normal high falls 10°F, from 79°F on September 1 to 69°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 63°F and 68°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 79°F | 61°F | 32% | 20% |
| September 8 | 77°F | 59°F | 32% | 19% |
| September 15 | 75°F | 57°F | 32% | 19% |
| September 22 | 72°F | 55°F | 34% | 19% |
| September 30 | 69°F | 51°F | 34% | 19% |
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 | 79°F | 61°F | 32% | 20% | 13 h 10 min |
| September 2 | 78°F | 61°F | 32% | 19% | 13 h 10 min |
| September 3 | 78°F | 61°F | 32% | 19% | 13 h |
| September 4 | 78°F | 61°F | 32% | 19% | 13 h |
| September 5 | 78°F | 60°F | 32% | 19% | 13 h |
| September 6 | 77°F | 60°F | 32% | 19% | 13 h |
| September 7 | 77°F | 60°F | 32% | 19% | 12 h 50 min |
| September 8 | 77°F | 59°F | 32% | 19% | 12 h 50 min |
| September 9 | 77°F | 59°F | 32% | 19% | 12 h 50 min |
| September 10 | 76°F | 59°F | 32% | 19% | 12 h 50 min |
| September 11 | 76°F | 59°F | 32% | 19% | 12 h 40 min |
| September 12 | 76°F | 58°F | 32% | 19% | 12 h 40 min |
| September 13 | 75°F | 58°F | 32% | 19% | 12 h 40 min |
| September 14 | 75°F | 58°F | 32% | 19% | 12 h 30 min |
| September 15 | 75°F | 57°F | 32% | 19% | 12 h 30 min |
| September 16 | 74°F | 57°F | 33% | 19% | 12 h 30 min |
| September 17 | 74°F | 56°F | 33% | 19% | 12 h 30 min |
| September 18 | 74°F | 56°F | 33% | 19% | 12 h 20 min |
| September 19 | 73°F | 56°F | 33% | 19% | 12 h 20 min |
| September 20 | 73°F | 55°F | 33% | 19% | 12 h 20 min |
| September 21 | 72°F | 55°F | 33% | 19% | 12 h 20 min |
| September 22 | 72°F | 55°F | 34% | 19% | 12 h 10 min |
| September 23 | 72°F | 54°F | 34% | 19% | 12 h 10 min |
| September 24 | 71°F | 54°F | 34% | 19% | 12 h 10 min |
| September 25 | 71°F | 53°F | 34% | 19% | 12 h 10 min |
| September 26 | 71°F | 53°F | 34% | 19% | 12 h |
| September 27 | 70°F | 53°F | 34% | 19% | 12 h |
| September 28 | 70°F | 52°F | 34% | 19% | 12 h |
| September 29 | 69°F | 52°F | 34% | 19% | 11 h 50 min |
| September 30 | 69°F | 51°F | 34% | 19% | 11 h 50 min |
- Normal high
- 74°FSeptember average
- Normal low
- 57°FSeptember average
- Precipitation
- 4.94 inmonth total
- Days with precipitation
- 100.01 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
- 22
- Days at 80°F or more
- 7
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094745; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Westchester County Airport in September?
On a given September day the chance of 0.01 inch or more is 33% on average, highest around September 30 (34%). In all, 4.94 in falls on 10 days of a normal September, 2 of them with an inch or more.
In a normal September in Westchester County Airport, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094745.
How humid and windy is Westchester County Airport in September?
At 3 p.m. the normal temperature is 68°F with 57% relative humidity and a dew point of 52°F; at 6 a.m. it is 55°F with 86% humidity. The wind averages 6.4 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 55°F | 51°F | 86% | 5.6 mph | – |
| 9 a.m. | 62°F | 52°F | 72% | 7.6 mph | – |
| noon | 66°F | 52°F | 60% | 8.5 mph | – |
| 3 p.m. | 68°F | 52°F | 57% | 8.3 mph | – |
| 6 p.m. | 62°F | 53°F | 71% | 5.3 mph | – |
| 9 p.m. | 59°F | 52°F | 80% | 5.0 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094745. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Westchester County Airport?
The warmest September temperature on this station's record (since 1948) is 100°F, on September 2, 1953; the coldest is 32°F, on September 20, 2004. The wettest September brought 12.84 in (1975).
The September mean against the 1991-2020 normal of 65.4°F: 2021 66.7°F (+1.3), 2022 66.6°F (+1.2), 2023 67.1°F (+1.7), 2024 65.8°F (+0.4), 2026 65.7°F (+0.3). 5 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.7°F | +1.3°F | 8.54 in |
| 2022 | 66.6°F | +1.2°F | 4.46 in |
| 2023 | 67.1°F | +1.7°F | 10.45 in |
| 2024 | 65.8°F | +0.4°F | 0.80 in |
| 2026 | 65.7°F | +0.3°F | 6.30 in |
Source: records: ACIS, station USW00094745; recent months: ACIS, station USW00094745. Records and recent months use complete months only.
How does September in Westchester County Airport 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; Westchester County Airport's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Westchester County Airport in August81°F by day, 64°F at night
- Westchester County Airport in October63°F by day, 46°F at night
- Westchester County Airport through the yearEvery month, frost dates, records and recent years
- New York in SeptemberThe statewide normal and the warmest and coolest places
- Wantagh: New York's warmest Septembernormal high 78°F