Middletown weather in September

In September, Middletown sees average daytime highs of 73°F and overnight lows near 55°F, with 4.1 in of rain across 9.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 77°F in the first days to 68°F by the end. The sky is clear or mostly clear about 35% 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 Middletown's 1st-clearest and 9th-windiest month. For the whole year in context, see Middletown's year-round climate.

Daytime high
73°
4th warmest
Overnight low
55°
9th coldest
Rainfall
4.1 in
9.3 wet days
Daylight
12 h 18 min
5:44 AM – 6:00 PM
Cloud cover
56%
1st clearest
Wind
6 mph
9th windiest
Solar energy
4.16 kWh/m²
Travel score
6.9
out of 10

Middletown is city in Orange County, New York, United States.

Density
2,105/km²
people per km²
Founded
1848

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 77°F in the first days to 68°F by the end.

A typical September day in Middletown reaches about 73°F in the afternoon and slips back to 55°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 64°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)
17860
27860
37759
47759
57759
67758
77658
87658
97658
107557
117557
127456
137456
147456
157455
167355
177355
187254
197254
207253
217153
227153
237152
247052
257052
266951
276951
286851
296850
306850

How September really feels in Middletown

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.

Middletown weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 20°3.49.56.19.30.0
Feb37° / 21°3.08.85.310.30.0
Mar46° / 29°4.1114.311.71.2
Apr58° / 40°3.810.9113.14.2
May68° / 49°3.811.7014.36.0
Jun77° / 59°4.011.3014.96.5
Jul82° / 64°3.810.7014.76.2
Aug80° / 62°3.710.2013.76.5
Sep73° / 55°4.19.3012.36.9
Oct61° / 44°4.29.40.310.95.1
Nov49° / 34°3.38.71.29.72.2
Dec39° / 26°4.0104.39.10.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
65050
75050
85149
95149
105248
115248
125248
135347
145347
155347
165347
175248
185248
195248
205248
215149
225149
235149
245050
255050
265050
275050
285050
295050
305149

Chance of precipitation in September

Any precipitation

Middletown gets around 4.1 in of rain over 9.3 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 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
128
228
328
428
528
629
729
829
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1931
2031
2131
2232
2332
2432
2532
2632
2732
2832
2932
3032

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 53% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1352620163
2362620163
3372519163
4382518153
5392518153
6402517153
7412517142
8422516142
9432516142
10452416132
11462416132
12472416121
13492315121
14512215111
15522215101
16532115101
1755201591
1856201581
1957191581
2060181570
2162171470
2263171460
2364161460
2467151350
2567151350
2669141250
2770141240
2871141140
2971141140
3074131030

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 6 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
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:28 AM to 5:59 AM, and sunset from 6:27 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:286:27
212.95:296:25
312.95:306:23
412.85:316:21
512.85:326:20
612.75:336:18
712.75:346:16
812.65:356:14
912.65:376:13
1012.65:386:11
1112.55:396:09
1212.55:406:07
1312.45:416:06
1412.45:426:04
1512.35:436:02
1612.35:446:00
1712.25:455:58
1812.25:465:57
1912.15:475:55
2012.15:485:53
2112.05:495:51
2212.05:505:49
2311.95:515:48
2411.95:525:46
2511.85:535:44
2611.85:545:42
2711.85:555:41
2811.75:575:39
2911.75:585:37
3011.65:595:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.16 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 5.96 kWh/m² in July across the year — September's 4.16 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
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.7Moderate
283.6Moderate
293.6Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Middletown?

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

6.9
Sightseeing
1st-best month of the year
5.2
Beach & pool
4th-best month of the year

September is a reasonable time to visit Middletown for sightseeing.

What to pack for Middletown in September

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

In September, Middletown sees daytime highs around 73°F and nights near 55°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Middletown 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 Middletown 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
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Middletown in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Middletown is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May16Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Middletown?

Middletown sits at 41.4°N, 74.4°W, 558 ft above sea level, in United States. The nearest listed city is Kiryas Joel, 15 mi away.

Topography around Middletown

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

Within 2 miles, the terrain around Middletown has only modest variations in elevation — a maximum elevation change of 492 ft around an average of 604 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,165 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,370 ft.

The land around Middletown is covered by trees (54%) and artificial surfaces (24%) within 2 miles, trees (69%) within 10 miles, and trees (86%) within 50 miles.

2 miles
492 ft
10 miles
1,165 ft
50 miles
4,370 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Kiryas Joel 15 mi · Newburgh 22 mi · West Milford 22 mi · Peekskill 28 mi · Mahwah 29 mi · Monsey 30 mi · Spring Valley 30 mi · New City 30 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 Middletown (41.4459°, -74.4229°, elevation 558 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).