El Dorado weather in September

In September, El Dorado sees average daytime highs of 88°F and overnight lows near 67°F, with 3.6 in of rain across 7.4 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 91°F in the first days to 84°F by the end. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is El Dorado's 2nd-clearest and 9th-windiest month. For the whole year in context, see El Dorado's year-round climate.

Daytime high
88°
4th warmest
Overnight low
67°
9th coldest
Rainfall
3.6 in
7.4 wet days
Daylight
12 h 12 min
5:59 AM – 6:11 PM
Cloud cover
44%
2nd clearest
Wind
5 mph
9th windiest
Solar energy
5 kWh/m²
Travel score
5.0
out of 10

El Dorado is city in and county seat of Union County, Arkansas, United States.

Density
436/km²
people per km²
Founded
1843

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 91°F in the first days to 84°F by the end.

A typical September day in El Dorado reaches about 88°F in the afternoon and slips back to 67°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 96°F. Set against its neighbours, September runs about 6°F cooler than August and about 11°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
19171
29171
39171
49170
59070
69070
79070
89069
98969
108969
118969
128968
138968
148868
158867
168867
178767
188766
198766
208766
218665
228665
238564
248564
258564
268563
278463
288462
298362
308362

How September really feels in El Dorado

Once humidity and wind are folded in, September averages 13 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
13
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.

El Dorado weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan55° / 38°4.49.30.310.13.7
Feb59° / 41°4.19.20.510.84.6
Mar68° / 48°5.211.20.111.76.2
Apr75° / 55°5.79.5012.87.0
May83° / 64°4.611.8013.75.6
Jun90° / 71°3.910.8014.23.8
Jul93° / 74°3.410.90143.0
Aug93° / 73°2.99.5013.23.1
Sep88° / 67°3.67.4012.25.0
Oct77° / 56°4.48011.27.3
Nov65° / 46°3.87.9010.36.4
Dec57° / 40°4.99.60.29.84.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16535
26436
36535
46535
56535
66535
76535
86535
96634
106634
116634
126733
136733
146733
156733
166733
176733
186733
196832
206832
216931
226931
237030
247030
257228
267228
277327
287327
297327
307327

Chance of precipitation in September

Any precipitation

El Dorado gets around 3.6 in of rain over 7.4 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 25% and peaks near 29% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
329
429
528
628
728
827
926
1026
1126
1225
1325
1425
1525
1625
1725
1825
1925
2024
2124
2223
2323
2422
2522
2622
2722
2822
2921
3021

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1382029382
2392129372
34102128362
45102128352
55112127342
66122127332
77122027321
88132027311
99132027301
1010141927291
1110141927291
1211141927281
1312141927271
1413141928261
1513141928251
1614141928241
1715151928231
1816151828221
1918151828211
2019151828191
2121151828181
2222151827171
2324151826160
2426151826150
2527161825140
2629161824130
2730161823120
2832171823110
2933171822100
3034171821100

Wind in September

Winds average 5 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
165calm
175calm
185calm
195calm
205calm
215calm
225calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over September. Sunrise moves from 5:49 AM to 6:09 AM, and sunset from 6:32 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:496:32
212.75:496:31
312.75:506:29
412.65:516:28
512.65:516:27
612.65:526:25
712.55:536:24
812.55:536:22
912.45:546:21
1012.45:556:20
1112.45:566:18
1212.35:566:17
1312.35:576:15
1412.35:586:14
1512.25:586:12
1612.25:596:11
1712.26:006:10
1812.16:006:08
1912.16:016:07
2012.16:026:05
2112.06:026:04
2212.06:036:03
2312.06:046:01
2411.96:046:00
2511.96:055:58
2611.96:065:57
2711.86:075:55
2811.86:075:54
2911.76:085:53
3011.76:095:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 6.3 kWh/m² in July across the year — September's 5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.7Bright
304.7Bright
Planning a trip in September

Is September a good time to visit El Dorado?

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

5.0
Sightseeing
6th-best month of the year
7.2
Beach & pool
1st-best month of the year

September is a reasonable time to visit El Dorado for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for El Dorado in September

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

In September, El Dorado sees daytime highs around 88°F and nights near 67°F. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in El Dorado in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in El Dorado peaks around June 20 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 20UV 10Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr9Very high
May9Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in El Dorado 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 El Dorado is worst in July — around 23 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (January, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1722 µg/m³Jan 117 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar11Good
Apr11Good
May15Moderate
Jun19Moderate
Jul23Moderate
Aug19Moderate
Sep14Moderate
Oct9Good
Nov9Good
Dec8Good
Location & terrain

Where is El Dorado?

El Dorado sits at 33.2°N, 92.7°W, 269 ft above sea level, in United States. The nearest listed city is Ruston, 47 mi away.

Topography around El Dorado

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

Within 2 miles, the terrain around El Dorado has only modest variations in elevation — a maximum elevation change of 180 ft around an average of 243 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 282 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 459 ft.

The land around El Dorado is covered by trees (64%) and artificial surfaces (20%) within 2 miles, trees (87%) within 10 miles, and trees (89%) within 50 miles.

2 miles
180 ft
10 miles
282 ft
50 miles
459 ft
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Ruston 47 mi · Monroe 58 mi · Bossier City 78 mi · Shreveport 79 mi · Pine Bluff 80 mi · Texarkana 81 mi · Texarkana 81 mi · Hot Springs 93 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 El Dorado (33.2076°, -92.6663°, elevation 269 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).