Oak Ridge weather in September

In September, Oak Ridge sees average daytime highs of 87°F and overnight lows near 74°F, with 5.6 in of rain across 18.6 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 23% 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 Oak Ridge's 10th-clearest and 9th-windiest month. For the whole year in context, see Oak Ridge's year-round climate.

Daytime high
87°
4th warmest
Overnight low
74°
10th coldest
Rainfall
5.6 in
18.6 wet days
Daylight
12 h 12 min
6:15 AM – 6:25 PM
Cloud cover
66%
10th clearest
Wind
6 mph
9th windiest
Solar energy
4.7 kWh/m²
Travel score
3.6
out of 10

Oak Ridge is census-designated place and unincorporated area in Orange County, Florida, United States.

Density
2,335/km²
people per km²

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 Oak Ridge reaches about 87°F in the afternoon and slips back to 74°F overnight — a 14°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 5°F warmer than October.

60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18975
28975
38875
48875
58875
68875
78875
88875
98874
108874
118874
128874
138874
148774
158774
168774
178774
188774
198774
208773
218773
228773
238773
248773
258673
268673
278673
288672
298672
308572

How September really feels in Oak Ridge

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.

Oak Ridge 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° / 51°2.26.110.47.2
Feb73° / 53°2.06.4117.3
Mar77° / 57°2.46.211.87.6
Apr82° / 63°2.16.712.76.8
May86° / 69°2.79.113.45.1
Jun89° / 74°6.119.813.83.2
Jul90° / 75°6.022.513.62.8
Aug90° / 76°6.523.5132.8
Sep87° / 74°5.618.612.23.6
Oct83° / 67°2.69.811.36.1
Nov76° / 59°1.35.310.67.7
Dec72° / 54°2.05.510.27.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% 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 59%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13466
23466
33466
43466
53466
63565
73565
83664
93664
103664
113862
123961
133961
144060
154258
164258
174357
184357
194456
204555
214555
224753
234753
244654
254654
264753
274753
284852
294852
304852

Chance of precipitation in September

Any precipitation

Oak Ridge gets around 5.6 in of rain over 18.6 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 62% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
171
270
370
469
568
668
767
866
966
1065
1164
1264
1363
1463
1562
1662
1761
1861
1960
2059
2159
2258
2358
2457
2556
2655
2755
2854
2953
3052

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 97% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100067024
200077023
300077122
400087121
500087319
600097318
700097417
8000107416
9000117415
10000117415
11000127414
12000137413
13000137413
14000147313
15001157212
16001157212
17001167112
18001167112
19001177012
20002176912
21002177011
22013176811
23013186711
24014186710
25015186610
2612519649
2712619639
2812719629
2912719629
3013819618

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 6:07 AM to 6:22 AM, and sunset from 6:43 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:076:43
212.66:086:42
312.56:096:41
412.56:096:40
512.56:106:39
612.56:106:37
712.46:116:36
812.46:116:35
912.46:126:34
1012.36:126:32
1112.36:136:31
1212.36:136:30
1312.36:136:29
1412.26:146:28
1512.26:146:26
1612.26:156:25
1712.16:156:24
1812.16:166:23
1912.16:166:21
2012.16:176:20
2112.06:186:19
2212.06:186:18
2312.06:196:16
2411.96:196:15
2511.96:206:14
2611.96:206:13
2711.86:216:11
2811.86:216:10
2911.86:226:09
3011.86:226:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.7 kWh/m².

For context, solar energy here swings from a low near 3 kWh/m² to a high of 6.26 kWh/m² in May across the year — September's 4.7 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.6Bright
204.6Bright
214.6Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Oak Ridge

In seasonPeak

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

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

Oak Ridge'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 Oak Ridge?

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

3.6
Sightseeing
9th-best month of the year
5.3
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Oak Ridge.

What to pack for Oak Ridge in September

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

In September, Oak Ridge sees daytime highs around 87°F and nights near 74°F. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Oak Ridge 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 Oak Ridge peaks around July 15 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 15UV 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 Oak Ridge 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 Oak Ridge is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1619 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar12Moderate
Apr12Moderate
May12Good
Jun17Moderate
Jul19Moderate
Aug17Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec9Good
Location & terrain

Where is Oak Ridge?

Oak Ridge sits at 28.5°N, 81.4°W, 89 ft above sea level, in United States. The nearest listed city is Orlando, 5.6 mi away.

Topography around Oak Ridge

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

Within 2 miles, the terrain around Oak Ridge has only modest variations in elevation — a maximum elevation change of 62 ft around an average of 102 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 144 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 377 ft.

The land around Oak Ridge is covered by artificial surfaces (59%) and trees (29%) within 2 miles, trees (42%) and artificial surfaces (35%) within 10 miles, and trees (58%) and grassland (22%) within 50 miles.

2 miles
62 ft
10 miles
144 ft
50 miles
377 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Orlando 5.6 mi · Southchase 6.2 mi · Pine Hills 6.2 mi · Meadow Woods 6.8 mi · Lake Butler 7.5 mi · Ocoee 9.9 mi · Winter Park 11 mi · Buenaventura Lakes 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 Oak Ridge (28.4711°, -81.4245°, elevation 89 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).