Greenacres City weather in September

In September, Greenacres City sees average daytime highs of 87°F and overnight lows near 76°F, with 7.6 in of rain across 23.9 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 87°F through the month. The sky is clear or mostly clear about 18% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Greenacres City's 12th-clearest and 9th-windiest month. For the whole year in context, see Greenacres City's year-round climate.

Daytime high
87°
4th warmest
Overnight low
76°
10th coldest
Rainfall
7.6 in
23.9 wet days
Daylight
12 h 12 min
6:10 AM – 6:19 PM
Cloud cover
71%
12th clearest
Wind
6 mph
9th windiest
Solar energy
4.78 kWh/m²
Travel score
3.1
out of 10

Greenacres City is city in central Palm Beach County, Florida, United States.

Density
2,170/km²
people per km²
Founded
1926

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 87°F through the month.

A typical September day in Greenacres City reaches about 87°F in the afternoon and slips back to 76°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 84°F and 90°F. Set against its neighbours, September runs about 2°F cooler than August and about 3°F warmer than October.

70°80°90°151015202530
Avg high (°F)Avg low (°F)
18877
28877
38877
48877
58877
68877
78877
88877
98777
108777
118777
128777
138777
148776
158776
168776
178776
188776
198776
208776
218776
228776
238776
248776
258676
268676
278676
288676
298676
308676

How September really feels in Greenacres City

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Greenacres City 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 daysDaylight (hours)Travel score
Jan74° / 59°1.66.210.57.6
Feb76° / 61°1.6611.17.6
Mar79° / 64°2.47.411.87.1
Apr82° / 68°2.78.512.66.4
May85° / 72°4.61313.34.9
Jun87° / 76°8.423.313.63.1
Jul89° / 77°7.424.913.52.8
Aug89° / 77°7.925.812.92.7
Sep87° / 76°7.623.912.23.1
Oct84° / 73°4.114.511.45.1
Nov79° / 67°1.67.110.77.1
Dec76° / 63°1.35.610.47.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12971
23070
33169
43169
53367
63367
73466
83466
93565
103664
113664
123862
133961
143862
153961
163961
173961
183961
193961
203961
213961
223961
233961
243961
253961
263961
274060
284060
294060
304258

Chance of precipitation in September

Any precipitation

Greenacres City gets around 7.6 in of rain over 23.9 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 79% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
285
384
484
584
683
783
883
982
1082
1181
1281
1380
1480
1580
1679
1779
1878
1978
2077
2177
2277
2376
2475
2575
2674
2773
2872
2970
3069

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1014851
2014950
3015049
4015148
5015346
6015445
7015643
8015742
9015841
10025840
11025939
12026038
13026038
14026038
15036037
16036037
17036037
18036037
19045937
20046036
21046036
22056035
23056134
24066133
25076033
26076132
27186031
28196030
29196129
301106128

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 6 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
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over September. Sunrise moves from 6:04 AM to 6:16 AM, and sunset from 6:37 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:046:37
212.56:046:36
312.56:056:35
412.56:056:33
512.46:056:32
612.46:066:31
712.46:066:30
812.46:076:29
912.36:076:28
1012.36:086:27
1112.36:086:25
1212.36:086:24
1312.26:096:23
1412.26:096:22
1512.26:106:21
1612.26:106:19
1712.16:116:18
1812.16:116:17
1912.16:116:16
2012.06:126:15
2112.06:126:14
2212.06:136:12
2312.06:136:11
2411.96:146:10
2511.96:146:09
2611.96:156:08
2711.96:156:07
2811.86:166:05
2911.86:166:04
3011.86:166:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.78 kWh/m².

For context, solar energy here swings from a low near 3.11 kWh/m² to a high of 6.14 kWh/m² in May across the year — September's 4.78 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.4Bright
Planning a trip in September

Hazard calendar for Greenacres City

In seasonPeak

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

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

Greenacres City's monsoon runs May–October, when most of the year's rain falls.

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

Is September a good time to visit Greenacres City?

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

3.1
Sightseeing
9th-best month of the year
4.5
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Greenacres City.

What to pack for Greenacres City in September

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

In September, Greenacres City sees daytime highs around 87°F and nights near 76°F. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Greenacres City in September

The nearest coast averages about 85°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 16 mi away) is warmest in August at about 85°F and coldest in February near 77°F.

The water stays above 68°F all year — warm enough for a swim any month.

75°80°85°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan77Warm
Feb77Warm
Mar77Warm
Apr79Warm
May81Warm
Jun83Tropical
Jul85Tropical
Aug85Tropical
Sep85Tropical
Oct83Tropical
Nov81Warm
Dec79Warm

UV index in Greenacres City in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Greenacres City peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 12UV 11Dec 18UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr9Very high
May9Very high
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Greenacres City 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 Greenacres City is worst in July — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1722 µg/m³Nov 2010 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar13Moderate
Apr14Moderate
May15Moderate
Jun18Moderate
Jul23Moderate
Aug19Moderate
Sep14Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Greenacres City?

Greenacres City sits at 26.6°N, 80.1°W, 16 ft above sea level, in United States. The nearest listed city is Lake Worth Corridor, 1.9 mi away.

Topography around Greenacres City

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

Within 2 miles, the terrain around Greenacres City has only modest variations in elevation — a maximum elevation change of 39 ft around an average of 23 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 154 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 203 ft.

The land around Greenacres City is covered by artificial surfaces (59%) and trees (26%) within 2 miles, artificial surfaces (34%), water (23%) and trees (20%) within 10 miles, and water (39%) and wetland (23%) within 50 miles.

2 miles
39 ft
10 miles
154 ft
50 miles
203 ft
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Lake Worth Corridor 1.9 mi · Palm Springs 1.9 mi · Lake Worth Beach 3.1 mi · Wellington 7.5 mi · Boynton Beach 7.5 mi · West Palm Beach 7.5 mi · Royal Palm Beach 8.7 mi · Riviera Beach 11 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 Greenacres City (26.6237°, -80.1253°, elevation 16 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). 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. 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).