Duncan weather in October

In October, Duncan sees average daytime highs of 74°F and overnight lows near 54°F, with 3.5 in of rain across 6.8 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 69°F by the end. The sky is clear or mostly clear about 59% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 36 min by month's end. Set against the rest of the year, October is Duncan's 1st-clearest and 6th-windiest month. For the whole year in context, see Duncan's year-round climate.

Daytime high
74°
6th warmest
Overnight low
54°
7th coldest
Rainfall
3.5 in
6.8 wet days
Daylight
11 h 06 min
6:43 AM – 5:50 PM
Cloud cover
37%
1st clearest
Wind
9 mph
6th windiest
Solar energy
4.06 kWh/m²
Travel score
7.6
out of 10

Duncan is city and county seat of Stephens County, Oklahoma, United States.

Density
188/km²
people per km²
Founded
1892

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 69°F by the end.

A typical October day in Duncan reaches about 74°F in the afternoon and slips back to 54°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 85°F. Set against its neighbours, October runs about 11°F cooler than September and about 12°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
18159
28059
38059
48058
57958
67957
77857
87857
97756
107756
117755
127655
137655
147554
157554
167554
177453
187453
197352
207352
217352
227251
237251
247151
257150
267050
277049
286949
296949
306848
316848

How October really feels in Duncan

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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Duncan weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan52° / 32°1.54.80.9103.2
Feb56° / 36°1.85.80.910.74.4
Mar65° / 44°3.17.60.411.76.4
Apr73° / 52°3.67.9012.87.3
May81° / 62°4.710.6013.86.3
Jun89° / 70°3.68.6014.34.4
Jul94° / 74°1.85.8014.13.2
Aug93° / 73°1.95.6013.33.4
Sep85° / 65°2.86.4012.25.8
Oct74° / 54°3.56.8011.17.6
Nov62° / 42°2.15.50.210.26.2
Dec53° / 34°2.05.20.89.73.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27525
37525
47426
57426
67327
77228
87228
97129
107129
117030
127030
136931
146931
157030
166931
176931
186931
196931
206832
216832
226832
236832
246832
256733
266733
276733
286634
296634
306634
316634

Chance of precipitation in October

Any precipitation

Duncan gets around 3.5 in of rain over 6.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 22% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
118
219
319
420
520
621
721
821
922
1022
1122
1222
1322
1422
1521
1621
1721
1821
1921
2021
2121
2221
2321
2422
2522
2622
2722
2822
2922
3021
3121

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1491918131
2511917121
3521916111
4522016111
5542015101
6542015101
756201491
856201491
958201381
1058201381
1161191271
1262191270
1363191260
1465181160
1566181150
1667171150
1768171050
1869161050
1971151040
2071151040
217314940
227413940
237413940
247413940
257612840
267612840
277712830
287712830
297911730
307911730
318111620

Wind in October

Winds average 9 mph in October.

Across October, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over October. Sunrise moves from 6:31 AM to 6:57 AM, and sunset from 6:11 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:316:11
211.66:326:09
311.66:336:08
411.56:336:06
511.56:346:05
611.56:356:04
711.46:366:02
811.46:376:01
911.46:375:59
1011.36:385:58
1111.36:395:57
1211.36:405:56
1311.26:415:54
1411.26:425:53
1511.26:425:52
1611.16:435:50
1711.16:445:49
1811.06:455:48
1911.06:465:47
2011.06:475:46
2110.96:485:44
2210.96:495:43
2310.96:495:42
2410.86:505:41
2510.86:515:40
2610.86:525:39
2710.76:535:38
2810.76:545:37
2910.76:555:36
3010.76:565:35
3110.66:575:34

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.06 kWh/m².

For context, solar energy here swings from a low near 2.59 kWh/m² to a high of 6.94 kWh/m² in July across the year — October's 4.06 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.3Bright
114.3Bright
124.2Bright
134.2Bright
144.2Bright
154.1Bright
164.1Bright
174.0Bright
184.0Moderate
194.0Moderate
203.9Moderate
213.9Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.4Moderate
Planning a trip in October

Is October a good time to visit Duncan?

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

7.6
Sightseeing
1st-best month of the year
6.1
Beach & pool
6th-best month of the year

October is one of the better times to visit Duncan for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Duncan in October

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

In October, Duncan sees daytime highs around 74°F and nights near 54°F. Worth packing: light clothes. About 7 days see rain.

light clothes

UV index in Duncan in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Duncan peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highExtremeVery highHighModerateJun 23UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr9Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep7Very high
Oct6High
Nov4Moderate
Dec3Moderate
Location & terrain

Where is Duncan?

Duncan sits at 34.5°N, 98.0°W, 1,122 ft above sea level, in United States. The nearest listed city is Lawton, 25 mi away.

Topography around Duncan

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

Within 2 miles, the terrain around Duncan has only modest variations in elevation — a maximum elevation change of 167 ft around an average of 1,125 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 367 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,716 ft.

The land around Duncan is covered by grassland (39%), trees (29%) and artificial surfaces (27%) within 2 miles, grassland (64%) and trees (25%) within 10 miles, and grassland (66%) within 50 miles.

2 miles
167 ft
10 miles
367 ft
50 miles
1,716 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Lawton 25 mi · Chickasha 38 mi · Wichita Falls 51 mi · Ardmore 52 mi · Norman 58 mi · Mustang 62 mi · Moore 64 mi · Yukon 70 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 Duncan (34.5023°, -97.9578°, elevation 1,122 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).