Tahlequah weather in September

In September, Tahlequah sees average daytime highs of 83°F and overnight lows near 63°F, with 3.8 in of rain across 7.8 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 87°F in the first days to 79°F by the end. The sky is clear or mostly clear about 52% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Tahlequah's 1st-clearest and 10th-windiest month. For the whole year in context, see Tahlequah's year-round climate.

Daytime high
83°
4th warmest
Overnight low
63°
9th coldest
Rainfall
3.8 in
7.8 wet days
Daylight
12 h 12 min
6:07 AM – 6:21 PM
Cloud cover
43%
1st clearest
Wind
6 mph
10th windiest
Solar energy
4.92 kWh/m²
Travel score
6.4
out of 10

Tahlequah is city in Oklahoma, United States.

Density
512/km²
people per km²
Founded
1838

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 87°F in the first days to 79°F by the end.

A typical September day in Tahlequah reaches about 83°F in the afternoon and slips back to 63°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 92°F. Set against its neighbours, September runs about 7°F cooler than August and about 11°F warmer than October.

40°60°80°100°151015202530
Avg high (°F)Avg low (°F)
18868
28868
38768
48767
58767
68667
78666
88566
98566
108565
118465
128465
138364
148364
158364
168263
178263
188262
198162
208162
218161
228061
238060
248060
258059
267959
277958
287958
297858
307857

How September really feels in Tahlequah

Once humidity and wind are folded in, September averages 1 day 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
1
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.

Tahlequah weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan47° / 30°2.67.31.59.81.8
Feb52° / 34°2.67.31.210.63.0
Mar61° / 42°4.110.40.911.75.1
Apr70° / 50°5.611.2012.96.3
May77° / 60°6.112.60.113.96.4
Jun86° / 68°4.410.4014.45.1
Jul91° / 72°3.38.6014.23.9
Aug90° / 71°2.78013.44.2
Sep83° / 63°3.87.8012.26.4
Oct71° / 52°4.18.4011.17.2
Nov59° / 41°3.38.10.410.15.0
Dec49° / 33°3.07.31.29.62.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
27030
36931
46832
56832
66733
76634
86634
96535
106535
116337
126337
136337
146337
156238
166238
176139
186238
196337
206337
216436
226535
236733
246832
256931
267030
277030
287129
297129
307129

Chance of precipitation in September

Any precipitation

Tahlequah gets around 3.8 in of rain over 7.8 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 26% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
327
427
527
627
728
828
928
1028
1128
1228
1328
1428
1528
1628
1728
1828
1927
2027
2126
2225
2324
2423
2523
2622
2722
2821
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 28% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1810233920
2910233819
31011233718
41112243618
51213243517
61313243416
71414243315
81514243314
91615243213
101715243212
111815243211
121915243110
13201524319
14211624318
15231624307
16241624307
17251624296
18271623295
19291623285
20311623274
21331622264
22351621244
23371621233
24401620223
25421620203
26441619193
27461618182
28481618172
29491617162
30501617152

Wind in September

Winds average 6 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
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 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 66 minutes over September. Sunrise moves from 5:56 AM to 6:19 AM, and sunset from 6:44 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:566:44
212.85:566:42
312.75:576:41
412.75:586:39
512.65:596:38
612.66:006:36
712.66:006:35
812.56:016:33
912.56:026:32
1012.56:036:30
1112.46:046:29
1212.46:046:27
1312.36:056:26
1412.36:066:24
1512.36:076:22
1612.26:076:21
1712.26:086:19
1812.16:096:18
1912.16:106:16
2012.16:116:15
2112.06:116:13
2212.06:126:12
2312.06:136:10
2411.96:146:09
2511.96:156:07
2611.86:166:06
2711.86:166:04
2811.86:176:03
2911.76:186:01
3011.76:196:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.92 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 6.61 kWh/m² in July across the year — September's 4.92 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.1Bright
105.1Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Is September a good time to visit Tahlequah?

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

6.4
Sightseeing
2nd-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Tahlequah in September

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

In September, Tahlequah sees daytime highs around 83°F and nights near 63°F. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Tahlequah 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 Tahlequah peaks around July 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 12UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Tahlequah 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 Tahlequah is worst in July — around 18 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodJul 1617 µg/m³Nov 186 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb9Good
Mar13Moderate
Apr11Good
May12Moderate
Jun15Moderate
Jul18Moderate
Aug15Moderate
Sep10Good
Oct6Good
Nov6Good
Dec6Good
Location & terrain

Where is Tahlequah?

Tahlequah sits at 35.9°N, 95.0°W, 797 ft above sea level, in United States. The nearest listed city is Muskogee, 25 mi away.

Topography around Tahlequah

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

Within 2 miles, the terrain around Tahlequah has only modest variations in elevation — a maximum elevation change of 410 ft around an average of 856 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 673 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,841 ft.

The land around Tahlequah is covered by trees (44%) and grassland (36%) within 2 miles, trees (57%) and grassland (39%) within 10 miles, and trees (51%) and grassland (39%) within 50 miles.

2 miles
410 ft
10 miles
673 ft
50 miles
1,841 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Muskogee 25 mi · Siloam Springs 30 mi · Claremore 45 mi · Fayetteville 47 mi · Broken Arrow 47 mi · Van Buren 48 mi · Fort Smith 48 mi · Springdale 50 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 Tahlequah (35.9154°, -94.97°, elevation 797 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).