Henrietta weather in September

In September, Henrietta sees average daytime highs of 72°F and overnight lows near 54°F, with 3.3 in of rain across 10.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 76°F in the first days to 67°F by the end. The sky is clear or mostly clear about 31% 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 Henrietta's 3rd-clearest and 9th-windiest month. For the whole year in context, see Henrietta's year-round climate.

Daytime high
72°
4th warmest
Overnight low
54°
9th coldest
Rainfall
3.3 in
10.1 wet days
Daylight
12 h 18 min
5:56 AM – 6:13 PM
Cloud cover
58%
3rd clearest
Wind
7 mph
9th windiest
Solar energy
4.04 kWh/m²
Travel score
6.6
out of 10

Henrietta is town in Monroe County, New York, United States of America.

Founded
1818

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 76°F in the first days to 67°F by the end.

A typical September day in Henrietta reaches about 72°F in the afternoon and slips back to 54°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 82°F. Set against its neighbours, September runs about 7°F cooler than August and about 13°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17659
27659
37658
47658
57558
67558
77557
87457
97457
107456
117456
127356
137355
147355
157255
167254
177154
187153
197153
207053
217052
227052
236952
246951
256851
266851
276750
286750
296749
306649

How September really feels in Henrietta

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.

Henrietta weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 19°2.711.810.19.20.0
Feb34° / 20°2.39.88.110.20.0
Mar42° / 27°3.111.8611.60.5
Apr56° / 38°3.8122.113.13.4
May67° / 49°3.412.5014.45.8
Jun76° / 58°3.712015.16.5
Jul80° / 63°3.812.6014.96.2
Aug78° / 61°3.311.7013.86.5
Sep72° / 54°3.310.1012.36.6
Oct59° / 44°3.712.30.110.84.3
Nov47° / 34°3.011.73.29.51.4
Dec37° / 26°3.011.88.58.90.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25347
35347
45248
55149
65149
75050
85050
95050
104951
114951
124951
134951
144951
154951
164852
174852
185050
195050
205050
215050
224951
234951
244951
254852
264852
274753
284654
294654
304753

Chance of precipitation in September

Any precipitation

Henrietta gets around 3.3 in of rain over 10.1 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 34% and peaks near 39% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
231
331
432
532
632
733
833
933
1033
1133
1233
1333
1433
1533
1633
1733
1833
1933
2033
2134
2234
2335
2436
2536
2637
2738
2838
2939
3039

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 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1322824151
2332823141
3342922141
4362921131
5372921131
6382920121
7402919121
8412819111
9432818101
1044281891
1146271791
1248271780
1349271670
1451261670
1553261560
1654251560
1756251450
1857241450
1958241440
2060231340
2161221340
2264211230
2364211230
2466201130
2569191020
2669191020
277118920
287118920
297317820
307417720

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:39 AM to 6:12 AM, and sunset from 6:41 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:396:41
213.05:406:39
312.95:416:38
412.95:436:36
512.85:446:34
612.85:456:32
712.75:466:30
812.75:476:28
912.65:486:27
1012.65:496:25
1112.55:506:23
1212.55:526:21
1312.45:536:19
1412.45:546:17
1512.35:556:15
1612.35:566:13
1712.25:576:12
1812.25:586:10
1912.16:006:08
2012.16:016:06
2112.06:026:04
2212.06:036:02
2311.96:046:00
2411.96:055:58
2511.86:065:57
2611.86:085:55
2711.76:095:53
2811.76:105:51
2911.66:115:49
3011.66:125:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.04 kWh/m².

For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.17 kWh/m² in June across the year — September's 4.04 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.1Bright
164.0Bright
174.0Moderate
184.0Moderate
193.9Moderate
203.9Moderate
213.8Moderate
223.8Moderate
233.7Moderate
243.7Moderate
253.6Moderate
263.6Moderate
273.5Moderate
283.5Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit Henrietta?

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

6.6
Sightseeing
1st-best month of the year
4.6
Beach & pool
4th-best month of the year

September is a reasonable time to visit Henrietta for sightseeing.

What to pack for Henrietta in September

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

In September, Henrietta sees daytime highs around 72°F and nights near 54°F. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

Sea temperature near Henrietta in September

The nearest coast averages about 67°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 mi away) is warmest in August at about 72°F and coldest in March near 37°F.

It's comfortable for a long swim from Jul 16 to Sep 11 — about 1.9 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan39Bracing
Feb37Bracing
Mar37Bracing
Apr38Bracing
May42Bracing
Jun56Bracing
Jul69Refreshing
Aug72Refreshing
Sep67Cool
Oct58Bracing
Nov49Bracing
Dec43Bracing

UV index in Henrietta 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 Henrietta peaks around June 23 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highHighModerateLowJun 23UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Henrietta?

Henrietta sits at 43.1°N, 77.6°W, 600 ft above sea level, in United States. The nearest listed city is Rochester, 6.8 mi away.

Topography around Henrietta

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

Within 2 miles, the terrain around Henrietta has only modest variations in elevation — a maximum elevation change of 253 ft around an average of 591 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 807 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,067 ft.

The land around Henrietta is covered by trees (47%) and grassland (30%) within 2 miles, trees (52%) and grassland (23%) within 10 miles, and trees (40%) and water (30%) within 50 miles.

2 miles
253 ft
10 miles
807 ft
50 miles
2,067 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Rochester 6.8 mi · Brighton 6.8 mi · Gates-North Gates 8.7 mi · Irondequoit 11 mi · Batavia 29 mi · Auburn 53 mi · East Amherst 55 mi · Lockport 55 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 Henrietta (43.0592°, -77.6122°, elevation 600 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).