Duncan weather in March

In March, Duncan sees average daytime highs of 65°F and overnight lows near 44°F, with 3.1 in of precipitation across 7.6 wet days and about 11.7 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 61°F in the first days to 69°F by the end. The sky is clear or mostly clear about 45% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Duncan's 11th-clearest and 2nd-windiest month. For the whole year in context, see Duncan's year-round climate.

Daytime high
65°
8th warmest
Overnight low
44°
5th coldest
Precipitation
3.1 in
7.6 wet days
Daylight
11 h 42 min
6:50 AM – 6:33 PM
Cloud cover
50%
11th clearest
Wind
10 mph
2nd windiest
Solar energy
4.73 kWh/m²
Travel score
6.4
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 March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 61°F in the first days to 69°F by the end.

A typical March day in Duncan reaches about 65°F in the afternoon and slips back to 44°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 50°F and 79°F. Set against its neighbours, March runs about 8°F warmer than February and about 8°F cooler than April.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16039
26039
36139
46140
56140
66240
76241
86241
96342
106342
116442
126443
136443
146544
156544
166544
176645
186645
196646
206646
216746
226746
236746
246747
256847
266847
276847
286947
296948
306948
316948

How March really feels in Duncan

Once humidity and wind are folded in, March 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

March 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 March compares with the rest of the year at a glance. March is the 8th-warmest and 5th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 12% of March, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45545
55545
65545
75545
85545
95545
105446
115545
125545
135545
145644
155644
165644
175743
185743
195743
205743
215842
225842
235842
245941
255842
265842
275941
285941
295941
305941
315941

Chance of precipitation in March

Any precipitationSnow

Duncan gets around 3.1 in of rain and snow over 7.6 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 24% and peaks near 26% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1213
2213
3212
4212
5212
6222
7222
8222
9222
10231
11231
12241
13241
14251
15251
16251
17251
18251
19251
20261
21261
22261
23261
24261
25261
26261
27251
28251
29251
30250
31250

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
196400
296400
396400
495500
595500
695500
794510
893610
993610
1093610
1193610
1293610
1393610
1491720
1591720
1691720
1791720
1890730
1990730
2090730
2189740
2288840
2387850
2487850
2587850
2687850
2785861
2884961
2984961
3083971
31821071

Wind in March

Winds average 10 mph in March.

Across March, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 12 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over March. Sunrise moves from 7:09 AM to 6:28 AM, and sunset from 6:21 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:096:21
211.27:086:22
311.37:076:23
411.37:066:23
511.37:046:24
611.47:036:25
711.47:026:26
811.47:006:27
911.56:596:28
1011.56:586:28
1111.56:566:29
1211.66:556:30
1311.66:546:31
1411.76:526:32
1511.76:516:33
1611.76:506:33
1711.86:486:34
1811.86:476:35
1911.86:456:36
2011.96:446:37
2111.96:426:37
2212.06:416:38
2312.06:406:39
2412.06:386:40
2512.16:376:41
2612.16:356:41
2712.16:346:42
2812.26:336:43
2912.26:316:44
3012.26:306:45
3112.36:286:45

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.73 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 — March's 4.73 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.3Bright
34.3Bright
44.3Bright
54.4Bright
64.4Bright
74.4Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.6Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.8Bright
214.9Bright
224.9Bright
235.0Bright
245.0Bright
255.1Bright
265.1Bright
275.2Bright
285.2Bright
295.3Bright
305.3Bright
315.4Bright
Planning a trip in March

Is March a good time to visit Duncan?

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

6.4
Sightseeing
3rd-best month of the year
2.4
Beach & pool
8th-best month of the year

March is a reasonable time to visit Duncan for sightseeing.

What to pack for Duncan in March

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

In March, Duncan sees daytime highs around 65°F and nights near 44°F. Worth packing: a warm layer and sun protection. About 8 days see rain.

a warm layersun protection

UV index in Duncan in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March 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
March 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).