Poughkeepsie weather in September: Poughkeepsie, New York: normal highs, lows, rain and records for September
Poughkeepsie in September has a normal high of 75°F and a normal low of 53°F, a daily mean of 64°F, falling from 80°F on the 1st to 70°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 4.33 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 11°C, 110 mm of precipitation in September.
- NOAA stationPoughkeepsie/Hudson Valley Regional Airport
- Station IDUSW00014757
- Location41.63°N 73.88°W
- Elevation166 ft (51 m)
- From the center5 miles
- Population32,293
- Jan 36° 18°
- Feb 39° 20°
- Mar 48° 27°
- Apr 61° 38°
- May 71° 48°
- Jun 80° 57°
- Jul 85° 62°
- Aug 83° 61°
- Sep 75° 53°
- Oct 63° 41°
- Nov 51° 32°
- Dec 41° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Poughkeepsie in September?
The normal high is 75°F and the normal low 53°F, for a daily mean of 63.9°F. September is 7.8°F cooler than August and 11.7°F warmer than October. September is the 4th warmest month of the year in Poughkeepsie and the wettest. Across the month the normal high falls 10°F, from 80°F on September 1 to 70°F on September 30. From one year to the next September's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 62°F and 66°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 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 80°F | 58°F | 34% | 18% |
| September 8 | 78°F | 55°F | 34% | 18% |
| September 15 | 76°F | 53°F | 35% | 18% |
| September 22 | 73°F | 50°F | 36% | 19% |
| September 30 | 70°F | 47°F | 36% | 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 | 80°F | 58°F | 34% | 18% | 13 h 10 min |
| September 2 | 80°F | 57°F | 34% | 18% | 13 h 10 min |
| September 3 | 80°F | 57°F | 34% | 18% | 13 h 10 min |
| September 4 | 79°F | 57°F | 34% | 18% | 13 h |
| September 5 | 79°F | 56°F | 34% | 18% | 13 h |
| September 6 | 79°F | 56°F | 34% | 18% | 13 h |
| September 7 | 79°F | 56°F | 34% | 18% | 12 h 50 min |
| September 8 | 78°F | 55°F | 34% | 18% | 12 h 50 min |
| September 9 | 78°F | 55°F | 34% | 18% | 12 h 50 min |
| September 10 | 78°F | 55°F | 34% | 18% | 12 h 50 min |
| September 11 | 77°F | 54°F | 34% | 18% | 12 h 40 min |
| September 12 | 77°F | 54°F | 34% | 18% | 12 h 40 min |
| September 13 | 77°F | 54°F | 34% | 18% | 12 h 40 min |
| September 14 | 76°F | 53°F | 34% | 18% | 12 h 40 min |
| September 15 | 76°F | 53°F | 35% | 18% | 12 h 30 min |
| September 16 | 75°F | 53°F | 35% | 18% | 12 h 30 min |
| September 17 | 75°F | 52°F | 35% | 18% | 12 h 30 min |
| September 18 | 75°F | 52°F | 35% | 19% | 12 h 20 min |
| September 19 | 74°F | 51°F | 35% | 19% | 12 h 20 min |
| September 20 | 74°F | 51°F | 35% | 19% | 12 h 20 min |
| September 21 | 73°F | 51°F | 36% | 19% | 12 h 20 min |
| September 22 | 73°F | 50°F | 36% | 19% | 12 h 10 min |
| September 23 | 73°F | 50°F | 36% | 19% | 12 h 10 min |
| September 24 | 72°F | 49°F | 36% | 20% | 12 h 10 min |
| September 25 | 72°F | 49°F | 36% | 20% | 12 h 10 min |
| September 26 | 71°F | 49°F | 36% | 20% | 12 h |
| September 27 | 71°F | 48°F | 36% | 20% | 12 h |
| September 28 | 71°F | 48°F | 36% | 20% | 12 h |
| September 29 | 70°F | 47°F | 36% | 20% | 11 h 50 min |
| September 30 | 70°F | 47°F | 36% | 20% | 11 h 50 min |
- Normal high
- 75°FSeptember average
- Normal low
- 53°FSeptember average
- Precipitation
- 4.33 inmonth total
- Days with precipitation
- 110.01 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
- 24
- Days at 80°F or more
- 10
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014757; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Poughkeepsie in September?
On a given September day the chance of 0.01 inch or more is 35% on average, highest around September 28 (36%). In all, 4.33 in falls on 11 days of a normal September, 1 of them with an inch or more.
In a normal September in Poughkeepsie, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014757.
How humid and windy is Poughkeepsie in September?
At 3 p.m. the normal temperature is 69°F with 53% relative humidity and a dew point of 51°F; at 6 a.m. it is 51°F with 91% humidity. The wind averages 3.9 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 51°F | 48°F | 91% | 2.2 mph | – |
| 9 a.m. | 59°F | 52°F | 76% | 4.7 mph | – |
| noon | 67°F | 52°F | 58% | 6.8 mph | – |
| 3 p.m. | 69°F | 51°F | 53% | 6.9 mph | – |
| 6 p.m. | 62°F | 52°F | 71% | 3.7 mph | – |
| 9 p.m. | 56°F | 52°F | 84% | 2.5 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014757. 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 Poughkeepsie?
The warmest September temperature on Poughkeepsie's official record (since 1931) is 101°F, on September 2, 1953; the coldest is 26°F, on September 24, 1963. The wettest September brought 10.10 in (2011).
The September mean against the 1991-2020 normal of 63.9°F: 2021 66.0°F (+2.1), 2022 64.7°F (+0.8), 2023 65.3°F (+1.4), 2024 64.8°F (+0.9), 2025 65.3°F (+1.4), 2026 64.8°F (+0.9). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.0°F | +2.1°F | 9.78 in |
| 2022 | 64.7°F | +0.8°F | 4.70 in |
| 2023 | 65.3°F | +1.4°F | 7.66 in |
| 2024 | 64.8°F | +0.9°F | 0.57 in |
| 2025 | 65.3°F | +1.4°F | 1.26 in |
| 2026 | 64.8°F | +0.9°F | 4.47 in |
Source: records: ACIS, NWS threaded record POUthr; recent months: ACIS, station USW00014757. Records and recent months use complete months only.
How does September in Poughkeepsie 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; Poughkeepsie's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Poughkeepsie in August83°F by day, 61°F at night
- Poughkeepsie in October63°F by day, 41°F at night
- Poughkeepsie 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