Dumas weather in September

In September, Dumas sees average daytime highs of 83°F and overnight lows near 59°F, with 1.3 in of rain across 5.7 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 86°F in the first days to 79°F by the end. The sky is clear or mostly clear about 61% of the time in September, and the air most often feels dry.

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 Dumas's 2nd-clearest and 8th-windiest month. For the whole year in context, see Dumas's year-round climate.

Daytime high: 83°; 4th warmest
Overnight low: 59°; 9th coldest
Rainfall: 1.3 in; 5.7 wet days
Daylight: 12 h 12 min; 6:36 AM – 6:49 PM
Cloud cover: 34%; 2nd clearest
Wind: 10 mph; 8th windiest
Solar energy: 5.56 kWh/m²
Travel score: 6.9; out of 10

Dumas is city in Texas, USA.

Density: 1,045/km²; people per km²

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

← August Dumas year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 86°F in the first days to 79°F by the end.

A typical September day in Dumas reaches about 83°F in the afternoon and slips back to 59°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 92°F. Set against its neighbours, September runs about 7°F cooler than August and about 11°F warmer than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°F)	87	86	86	86	85	85	85	85	84	84	84	83	83	83	83	82	82	82	82	81	81	81	81	80	80	80	80	79	79	78
Avg low (°F)	64	63	63	63	62	62	62	61	61	61	60	60	60	59	59	59	58	58	58	57	57	56	56	56	55	55	55	54	54	53

	Avg high (°F)	Avg low (°F)
1	87	64
2	86	63
3	86	63
4	86	63
5	85	62
6	85	62
7	85	62
8	85	61
9	84	61
10	84	61
11	84	60
12	83	60
13	83	60
14	83	59
15	83	59
16	82	59
17	82	58
18	82	58
19	82	58
20	81	57
21	81	57
22	81	56
23	81	56
24	80	56
25	80	55
26	80	55
27	80	55
28	79	54
29	79	54
30	78	53

How September really feels in Dumas

Once humidity and wind are folded in, September 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

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Dumas weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	50° / 26°	0.7	2.8	1.6	9.8	2.7
Feb	54° / 29°	0.6	3.1	1.6	10.6	4.0
Mar	63° / 36°	1.4	5	1.4	11.7	6.4
Apr	71° / 44°	1.6	5.4	0.4	12.9	7.5
May	79° / 54°	2.2	7	0	13.9	7.2
Jun	89° / 63°	2.0	8.3	0	14.4	4.7
Jul	91° / 67°	2.0	8	0	14.2	3.8
Aug	89° / 66°	2.5	9.2	0	13.4	4.4
Sep	83° / 59°	1.3	5.7	0	12.2	6.9
Oct	72° / 47°	1.6	4.9	0.4	11.1	8.0
Nov	60° / 35°	0.8	3.4	1.2	10.1	5.7
Dec	50° / 27°	1.0	3.7	2.4	9.6	2.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	78	77	77	77	76	76	76	75	74	74	74	75	75	76	76	76	77	77	78	79	80	80	81	81	81	81	80	80	80	79
Cloudier (%)	22	23	23	23	24	24	24	25	26	26	26	25	25	24	24	24	23	23	22	21	20	20	19	19	19	19	20	20	20	21

	Clearer (%)	Cloudier (%)
1	78	22
2	77	23
3	77	23
4	77	23
5	76	24
6	76	24
7	76	24
8	75	25
9	74	26
10	74	26
11	74	26
12	75	25
13	75	25
14	76	24
15	76	24
16	76	24
17	77	23
18	77	23
19	78	22
20	79	21
21	80	20
22	80	20
23	81	19
24	81	19
25	81	19
26	81	19
27	80	20
28	80	20
29	80	20
30	79	21

Chance of precipitation in September

Any precipitation

Dumas gets around 1.3 in of rain over 5.7 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 20% and peaks near 22% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	21	21	21	21	21	21	21	21	21	21	22	22	22	22	22	22	22	21	21	20	20	19	19	18	18	17	17	17	16	16

	Rain chance (%)
1	21
2	21
3	21
4	21
5	21
6	21
7	21
8	21
9	21
10	21
11	22
12	22
13	22
14	22
15	22
16	22
17	22
18	21
19	21
20	20
21	20
22	19
23	19
24	18
25	18
26	17
27	17
28	17
29	16
30	16

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 61% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	40	42	43	45	46	47	48	49	50	52	53	54	55	57	59	60	62	64	66	68	70	72	74	75	78	79	81	81	83	84
Comfortable (%)	37	36	36	35	34	34	34	33	33	32	32	31	31	30	29	28	27	26	25	24	22	21	20	19	17	16	15	15	14	13
Humid (%)	21	21	20	20	19	19	18	17	17	16	15	15	14	13	12	12	11	10	9	8	8	7	6	6	5	5	4	4	3	3
Muggy (%)	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	40	37	21	1
2	42	36	21	1
3	43	36	20	1
4	45	35	20	1
5	46	34	19	1
6	47	34	19	1
7	48	34	18	0
8	49	33	17	0
9	50	33	17	0
10	52	32	16	0
11	53	32	15	0
12	54	31	15	0
13	55	31	14	0
14	57	30	13	0
15	59	29	12	0
16	60	28	12	0
17	62	27	11	0
18	64	26	10	0
19	66	25	9	0
20	68	24	8	0
21	70	22	8	0
22	72	21	7	0
23	74	20	6	0
24	75	19	6	0
25	78	17	5	0
26	79	16	5	0
27	81	15	4	0
28	81	15	4	0
29	83	14	3	0
30	84	13	3	0

Wind in September

Winds average 10 mph in September.

Across September, 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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (mph)	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (mph)	Feels
1	9	light breeze
2	9	light breeze
3	10	light breeze
4	10	light breeze
5	10	light breeze
6	10	light breeze
7	10	light breeze
8	10	light breeze
9	10	light breeze
10	10	light breeze
11	10	light breeze
12	10	light breeze
13	10	light breeze
14	10	light breeze
15	10	light breeze
16	10	light breeze
17	10	light breeze
18	10	light breeze
19	10	light breeze
20	10	light breeze
21	10	light breeze
22	10	light breeze
23	10	light breeze
24	10	light breeze
25	10	light breeze
26	10	light breeze
27	10	light breeze
28	10	light breeze
29	10	light breeze
30	10	light breeze

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 6:24 AM to 6:47 AM, and sunset from 7:12 PM to 6:28 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.8	12.8	12.7	12.7	12.6	12.6	12.6	12.5	12.5	12.5	12.4	12.4	12.3	12.3	12.3	12.2	12.2	12.1	12.1	12.1	12.0	12.0	12.0	11.9	11.9	11.8	11.8	11.8	11.7	11.7
Sunrise (AM)	6:24	6:24	6:25	6:26	6:27	6:28	6:28	6:29	6:30	6:31	6:32	6:32	6:33	6:34	6:35	6:36	6:36	6:37	6:38	6:39	6:39	6:40	6:41	6:42	6:43	6:44	6:44	6:45	6:46	6:47
Sunset (PM)	7:12	7:10	7:09	7:07	7:06	7:04	7:03	7:01	7:00	6:58	6:57	6:55	6:54	6:52	6:50	6:49	6:47	6:46	6:44	6:43	6:41	6:40	6:38	6:37	6:35	6:34	6:32	6:31	6:29	6:28

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.8	6:24	7:12
2	12.8	6:24	7:10
3	12.7	6:25	7:09
4	12.7	6:26	7:07
5	12.6	6:27	7:06
6	12.6	6:28	7:04
7	12.6	6:28	7:03
8	12.5	6:29	7:01
9	12.5	6:30	7:00
10	12.5	6:31	6:58
11	12.4	6:32	6:57
12	12.4	6:32	6:55
13	12.3	6:33	6:54
14	12.3	6:34	6:52
15	12.3	6:35	6:50
16	12.2	6:36	6:49
17	12.2	6:36	6:47
18	12.1	6:37	6:46
19	12.1	6:38	6:44
20	12.1	6:39	6:43
21	12.0	6:39	6:41
22	12.0	6:40	6:40
23	12.0	6:41	6:38
24	11.9	6:42	6:37
25	11.9	6:43	6:35
26	11.8	6:44	6:34
27	11.8	6:44	6:32
28	11.8	6:45	6:31
29	11.7	6:46	6:29
30	11.7	6:47	6:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.56 kWh/m².

For context, solar energy here swings from a low near 2.86 kWh/m² to a high of 7.44 kWh/m² in June across the year — September's 5.56 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	6.1	6.0	6.0	5.9	5.9	5.8	5.8	5.8	5.7	5.7	5.6	5.6	5.6	5.5	5.5	5.5	5.5	5.5	5.4	5.4	5.4	5.4	5.3	5.3	5.3	5.2	5.2	5.2	5.1	5.1
Level	Intense	Intense	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	6.1	Intense
2	6.0	Intense
3	6.0	Bright
4	5.9	Bright
5	5.9	Bright
6	5.8	Bright
7	5.8	Bright
8	5.8	Bright
9	5.7	Bright
10	5.7	Bright
11	5.6	Bright
12	5.6	Bright
13	5.6	Bright
14	5.5	Bright
15	5.5	Bright
16	5.5	Bright
17	5.5	Bright
18	5.5	Bright
19	5.4	Bright
20	5.4	Bright
21	5.4	Bright
22	5.4	Bright
23	5.3	Bright
24	5.3	Bright
25	5.3	Bright
26	5.2	Bright
27	5.2	Bright
28	5.2	Bright
29	5.1	Bright
30	5.1	Bright

Planning a trip in September

Is September a good time to visit Dumas?

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

6.9

Sightseeing

4th-best month of the year

7.7

Beach & pool

1st-best month of the year

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

What to pack for Dumas in September

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

In September, Dumas sees daytime highs around 83°F and nights near 59°F. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Dumas 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 Dumas peaks around July 11 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	4	5	9	9	11	11	10	8	5	4	3
Level	Moderate	Moderate	Moderate	Very high	Very high	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	4	Moderate
Mar	5	Moderate
Apr	9	Very high
May	9	Very high
Jun	11	Extreme
Jul	11	Extreme
Aug	10	Extreme
Sep	8	Very high
Oct	5	High
Nov	4	Moderate
Dec	3	Moderate

Location & terrain

Where is Dumas?

Dumas sits at 35.9°N, 102.0°W, 3,661 ft above sea level, in United States. The nearest listed city is Amarillo, 45 mi away.

Topography around Dumas

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

Within 2 miles, the terrain around Dumas has only modest variations in elevation — a maximum elevation change of 138 ft around an average of 3,658 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 623 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,713 ft.

The land around Dumas is covered by grassland (44%), artificial surfaces (28%) and cropland (24%) within 2 miles, grassland (55%) and cropland (43%) within 10 miles, and grassland (68%) and cropland (31%) within 50 miles.

2 miles

138 ft

grassland 44%

10 miles

623 ft

grassland 55%

50 miles

1,713 ft

grassland 68%

treesgrasslandcroplandartificial surfacesbare terrain

← August Dumas year-round climate October →Best places to visit in September

September weather nearby: Amarillo 45 mi · Pampa 62 mi · Hereford 76 mi · Liberal 100 mi · Plainview 117 mi · Clovis 122 mi · Garden City 158 mi · Lubbock 158 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

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 Dumas (35.8656°, -101.9732°, elevation 3,661 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).

	Avg high (°F)	Avg low (°F)
1	87	64
2	86	63
3	86	63
4	86	63
5	85	62
6	85	62
7	85	62
8	85	61
9	84	61
10	84	61
11	84	60
12	83	60
13	83	60
14	83	59
15	83	59
16	82	59
17	82	58
18	82	58
19	82	58
20	81	57
21	81	57
22	81	56
23	81	56
24	80	56
25	80	55
26	80	55
27	80	55
28	79	54
29	79	54
30	78	53

	Clearer (%)	Cloudier (%)
1	78	22
2	77	23
3	77	23
4	77	23
5	76	24
6	76	24
7	76	24
8	75	25
9	74	26
10	74	26
11	74	26
12	75	25
13	75	25
14	76	24
15	76	24
16	76	24
17	77	23
18	77	23
19	78	22
20	79	21
21	80	20
22	80	20
23	81	19
24	81	19
25	81	19
26	81	19
27	80	20
28	80	20
29	80	20
30	79	21

	Rain chance (%)
1	21
2	21
3	21
4	21
5	21
6	21
7	21
8	21
9	21
10	21
11	22
12	22
13	22
14	22
15	22
16	22
17	22
18	21
19	21
20	20
21	20
22	19
23	19
24	18
25	18
26	17
27	17
28	17
29	16
30	16

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	40	37	21	1
2	42	36	21	1
3	43	36	20	1
4	45	35	20	1
5	46	34	19	1
6	47	34	19	1
7	48	34	18	0
8	49	33	17	0
9	50	33	17	0
10	52	32	16	0
11	53	32	15	0
12	54	31	15	0
13	55	31	14	0
14	57	30	13	0
15	59	29	12	0
16	60	28	12	0
17	62	27	11	0
18	64	26	10	0
19	66	25	9	0
20	68	24	8	0
21	70	22	8	0
22	72	21	7	0
23	74	20	6	0
24	75	19	6	0
25	78	17	5	0
26	79	16	5	0
27	81	15	4	0
28	81	15	4	0
29	83	14	3	0
30	84	13	3	0

	Avg high (°F)	Avg low (°F)
1	87	64
2	86	63
3	86	63
4	86	63
5	85	62
6	85	62
7	85	62
8	85	61
9	84	61
10	84	61
11	84	60
12	83	60
13	83	60
14	83	59
15	83	59
16	82	59
17	82	58
18	82	58
19	82	58
20	81	57
21	81	57
22	81	56
23	81	56
24	80	56
25	80	55
26	80	55
27	80	55
28	79	54
29	79	54
30	78	53

	Clearer (%)	Cloudier (%)
1	78	22
2	77	23
3	77	23
4	77	23
5	76	24
6	76	24
7	76	24
8	75	25
9	74	26
10	74	26
11	74	26
12	75	25
13	75	25
14	76	24
15	76	24
16	76	24
17	77	23
18	77	23
19	78	22
20	79	21
21	80	20
22	80	20
23	81	19
24	81	19
25	81	19
26	81	19
27	80	20
28	80	20
29	80	20
30	79	21

	Rain chance (%)
1	21
2	21
3	21
4	21
5	21
6	21
7	21
8	21
9	21
10	21
11	22
12	22
13	22
14	22
15	22
16	22
17	22
18	21
19	21
20	20
21	20
22	19
23	19
24	18
25	18
26	17
27	17
28	17
29	16
30	16

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	40	37	21	1
2	42	36	21	1
3	43	36	20	1
4	45	35	20	1
5	46	34	19	1
6	47	34	19	1
7	48	34	18	0
8	49	33	17	0
9	50	33	17	0
10	52	32	16	0
11	53	32	15	0
12	54	31	15	0
13	55	31	14	0
14	57	30	13	0
15	59	29	12	0
16	60	28	12	0
17	62	27	11	0
18	64	26	10	0
19	66	25	9	0
20	68	24	8	0
21	70	22	8	0
22	72	21	7	0
23	74	20	6	0
24	75	19	6	0
25	78	17	5	0
26	79	16	5	0
27	81	15	4	0
28	81	15	4	0
29	83	14	3	0
30	84	13	3	0

	Avg high (°F)	Avg low (°F)
1	87	64
2	86	63
3	86	63
4	86	63
5	85	62
6	85	62
7	85	62
8	85	61
9	84	61
10	84	61
11	84	60
12	83	60
13	83	60
14	83	59
15	83	59
16	82	59
17	82	58
18	82	58
19	82	58
20	81	57
21	81	57
22	81	56
23	81	56
24	80	56
25	80	55
26	80	55
27	80	55
28	79	54
29	79	54
30	78	53

	Clearer (%)	Cloudier (%)
1	78	22
2	77	23
3	77	23
4	77	23
5	76	24
6	76	24
7	76	24
8	75	25
9	74	26
10	74	26
11	74	26
12	75	25
13	75	25
14	76	24
15	76	24
16	76	24
17	77	23
18	77	23
19	78	22
20	79	21
21	80	20
22	80	20
23	81	19
24	81	19
25	81	19
26	81	19
27	80	20
28	80	20
29	80	20
30	79	21

	Rain chance (%)
1	21
2	21
3	21
4	21
5	21
6	21
7	21
8	21
9	21
10	21
11	22
12	22
13	22
14	22
15	22
16	22
17	22
18	21
19	21
20	20
21	20
22	19
23	19
24	18
25	18
26	17
27	17
28	17
29	16
30	16

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	40	37	21	1
2	42	36	21	1
3	43	36	20	1
4	45	35	20	1
5	46	34	19	1
6	47	34	19	1
7	48	34	18	0
8	49	33	17	0
9	50	33	17	0
10	52	32	16	0
11	53	32	15	0
12	54	31	15	0
13	55	31	14	0
14	57	30	13	0
15	59	29	12	0
16	60	28	12	0
17	62	27	11	0
18	64	26	10	0
19	66	25	9	0
20	68	24	8	0
21	70	22	8	0
22	72	21	7	0
23	74	20	6	0
24	75	19	6	0
25	78	17	5	0
26	79	16	5	0
27	81	15	4	0
28	81	15	4	0
29	83	14	3	0
30	84	13	3	0