Saint Cloud weather in September

In September, Saint Cloud sees average daytime highs of 87°F and overnight lows near 74°F, with 5.6 in of rain across 18 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 4th-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 22% 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 Saint Cloud's 10th-clearest and 9th-windiest month. For the whole year in context, see Saint Cloud's year-round climate.

Daytime high
87°
4th warmest
Overnight low
74°
10th coldest
Rainfall
5.6 in
18 wet days
Daylight
12 h 12 min
6:14 AM – 6:24 PM
Cloud cover
67%
10th clearest
Wind
6 mph
9th windiest
Solar energy
4.66 kWh/m²
Travel score
3.7
out of 10

Saint Cloud is city in Osceola County, Florida, United States.

Density
727/km²
people per km²
Founded
1909

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 Saint Cloud reaches about 87°F in the afternoon and slips back to 74°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 83°F and 91°F. Set against its neighbours, September runs about 2°F cooler than August and about 4°F warmer than October.

60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18975
28875
38875
48875
58875
68875
78875
88875
98875
108875
118875
128775
138774
148774
158774
168774
178774
188774
198774
208774
218774
228774
238774
248673
258673
268673
278673
288673
298673
308573

How September really feels in Saint Cloud

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.

Saint Cloud weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan70° / 52°2.15.510.47.3
Feb73° / 54°1.85.9117.5
Mar77° / 58°2.26.111.87.6
Apr82° / 63°2.06.412.76.9
May86° / 69°2.89.513.45.1
Jun89° / 74°6.319.813.83.3
Jul89° / 76°6.12213.62.9
Aug89° / 76°6.523132.8
Sep87° / 74°5.61812.23.7
Oct83° / 68°2.710.111.36.1
Nov77° / 60°1.35.110.67.7
Dec72° / 55°1.7510.27.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% 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 60%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13268
23268
33268
43268
53466
63466
73466
83565
93664
103763
113862
123862
133961
144060
154159
164159
174159
184258
194258
204456
214456
224456
234456
244555
254654
264654
274654
284555
294555
304555

Chance of precipitation in September

Any precipitation

Saint Cloud gets around 5.6 in of rain over 18 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 60% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
170
270
369
469
568
668
767
866
965
1064
1163
1262
1361
1460
1559
1658
1757
1857
1956
2056
2155
2255
2355
2454
2554
2654
2753
2853
2952
3051

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100046828
200056827
300057025
400057124
500067123
600067222
700077320
800077419
900087319
1000087418
1100097417
1200097417
13000107416
14000107416
15001117315
16001117315
17001127215
18001127215
19001137214
20002137114
21002137114
22013146913
23013146913
24014146912
25014156812
26015156811
27016166611
28126166510
29127176310
30128176210

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
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 6:07 AM to 6:22 AM, and sunset from 6:43 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:076:43
212.66:086:41
312.56:086:40
412.56:096:39
512.56:096:38
612.56:106:37
712.46:106:35
812.46:116:34
912.46:116:33
1012.36:126:32
1112.36:126:31
1212.36:136:29
1312.36:136:28
1412.26:136:27
1512.26:146:26
1612.26:146:24
1712.16:156:23
1812.16:156:22
1912.16:166:21
2012.16:166:19
2112.06:176:18
2212.06:176:17
2312.06:186:16
2411.96:186:15
2511.96:196:13
2611.96:196:12
2711.86:206:11
2811.86:216:10
2911.86:216:08
3011.86:226:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.66 kWh/m².

For context, solar energy here swings from a low near 2.99 kWh/m² to a high of 6.2 kWh/m² in May across the year — September's 4.66 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.4Bright
264.4Bright
274.4Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Saint Cloud

In seasonPeak

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

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

Saint Cloud's rainy season runs June–September, when most of the year's rain falls.

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

Is September a good time to visit Saint Cloud?

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

3.7
Sightseeing
9th-best month of the year
5.4
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Saint Cloud.

What to pack for Saint Cloud in September

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

In September, Saint Cloud sees daytime highs around 87°F and nights near 74°F. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Saint Cloud 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 Saint Cloud peaks around July 16 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 16UV 11Dec 20UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr8Very high
May9Very high
Jun10Extreme
Jul11Extreme
Aug10Very high
Sep9Very high
Oct7High
Nov5High
Dec4Moderate

Air quality in Saint Cloud 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 Saint Cloud is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1019 µg/m³Dec 137 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar15Moderate
Apr13Moderate
May13Moderate
Jun19Moderate
Jul19Moderate
Aug16Moderate
Sep11Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Saint Cloud?

Saint Cloud sits at 28.2°N, 81.3°W, 75 ft above sea level, in United States. The nearest listed city is Buenaventura Lakes, 7.5 mi away.

Topography around Saint Cloud

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

Within 2 miles, the terrain around Saint Cloud has only modest variations in elevation — a maximum elevation change of 85 ft around an average of 69 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 98 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 377 ft.

The land around Saint Cloud is covered by trees (38%) and artificial surfaces (21%) within 2 miles, trees (43%) and grassland (26%) within 10 miles, and trees (51%) and grassland (26%) within 50 miles.

2 miles
85 ft
10 miles
98 ft
50 miles
377 ft
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Buenaventura Lakes 7.5 mi · Kissimmee 9.3 mi · Meadow Woods 11 mi · Southchase 12 mi · Poinciana 13 mi · Oak Ridge 17 mi · Orlando 21 mi · Alafaya 22 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 Saint Cloud (28.2489°, -81.2812°, elevation 75 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. 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).