Poughkeepsie weather in September

In September, Poughkeepsie sees average daytime highs of 74°F and overnight lows near 55°F, with 4.0 in of rain across 8.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 69°F by the end. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Poughkeepsie's 1st-clearest and 9th-windiest month. For the whole year in context, see Poughkeepsie's year-round climate.

Daytime high
74°
4th warmest
Overnight low
55°
9th coldest
Rainfall
4.0 in
8.6 wet days
Daylight
12 h 18 min
5:42 AM – 5:58 PM
Cloud cover
56%
1st clearest
Wind
5 mph
9th windiest
Solar energy
4.15 kWh/m²
Travel score
7.0
out of 10

Poughkeepsie is city in New York, United States.

Density
2,051/km²
people per km²
Founded
1686

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 78°F in the first days to 69°F by the end.

A typical September day in Poughkeepsie reaches about 74°F in the afternoon and slips back to 55°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 83°F. Set against its neighbours, September runs about 7°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17960
27960
37860
47860
57859
67859
77759
87758
97658
107658
117657
127557
137556
147556
157456
167455
177455
187355
197354
207354
217253
227253
237153
247152
257052
267052
277051
286951
296951
306850

How September really feels in Poughkeepsie

Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Poughkeepsie weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 21°3.49.35.99.30.0
Feb38° / 22°2.98.24.910.30.0
Mar47° / 29°4.010.44.111.71.4
Apr59° / 40°3.810.8113.14.4
May69° / 50°3.711.6014.36.1
Jun78° / 59°3.811.60156.4
Jul83° / 64°3.510.3014.75.7
Aug81° / 63°3.79.4013.76.4
Sep74° / 55°4.08.6012.37.0
Oct62° / 45°4.390.210.95.4
Nov50° / 35°3.38.71.19.62.3
Dec40° / 27°4.0104.590.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25248
35248
45248
55248
65248
75248
85347
95347
105347
115446
125446
135446
145446
155446
165347
175347
185347
195446
205347
215347
225347
235347
245347
255347
265347
275347
285347
295347
305347

Chance of precipitation in September

Any precipitation

Poughkeepsie gets around 4.0 in of rain over 8.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
125
225
326
426
526
627
727
827
928
1028
1128
1228
1328
1428
1528
1628
1728
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2830
2930
3030

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1312623155
2322622155
3332522155
4352521145
5362520145
6372520134
7382519134
8402519134
9412518133
10422517133
11442417123
12452417122
13472316122
14482316112
15502216111
16522116101
1753211691
1855201591
1956201581
2057191581
2159181580
2260181570
2363171460
2463171460
2566161350
2666161350
2767161250
2869151240
2970151140
3070151140

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 5:26 AM to 5:57 AM, and sunset from 6:25 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:266:25
212.95:276:23
312.95:286:21
412.85:296:20
512.85:306:18
612.75:316:16
712.75:326:14
812.75:336:13
912.65:346:11
1012.65:356:09
1112.55:366:07
1212.55:386:05
1312.45:396:04
1412.45:406:02
1512.35:416:00
1612.35:425:58
1712.25:435:56
1812.25:445:55
1912.15:455:53
2012.15:465:51
2112.05:475:49
2212.05:485:47
2311.95:495:46
2411.95:505:44
2511.85:515:42
2611.85:525:40
2711.75:545:38
2811.75:555:37
2911.75:565:35
3011.65:575:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.15 kWh/m².

For context, solar energy here swings from a low near 1.59 kWh/m² to a high of 5.98 kWh/m² in July across the year — September's 4.15 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.7Moderate
283.6Moderate
293.6Moderate
303.5Moderate
Planning a trip in September

Hazard calendar for Poughkeepsie

In seasonPeak

In September, Poughkeepsie sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Poughkeepsie sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Poughkeepsie?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.0
Sightseeing
1st-best month of the year
5.5
Beach & pool
4th-best month of the year

September is one of the better times to visit Poughkeepsie for general sightseeing.

What to pack for Poughkeepsie in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Poughkeepsie sees daytime highs around 74°F and nights near 55°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Poughkeepsie in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Poughkeepsie peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 8Dec 23UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug5High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Poughkeepsie?

Poughkeepsie sits at 41.7°N, 73.9°W, 203 ft above sea level, in United States. The nearest listed city is Newburgh, 14 mi away.

Topography around Poughkeepsie

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Poughkeepsie.

Within 2 miles, the terrain around Poughkeepsie has only modest variations in elevation — a maximum elevation change of 518 ft around an average of 171 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,355 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,370 ft.

The land around Poughkeepsie is covered by trees (54%) and artificial surfaces (24%) within 2 miles, trees (80%) within 10 miles, and trees (88%) within 50 miles.

2 miles
518 ft
10 miles
1,355 ft
50 miles
4,370 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Newburgh 14 mi · Kingston 16 mi · Kiryas Joel 28 mi · Peekskill 29 mi · Cortlandt Manor 29 mi · Middletown 31 mi · Danbury 32 mi · Ossining 37 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Poughkeepsie (41.7004°, -73.921°, elevation 203 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).