Gallup weather in September

In September, Gallup sees average daytime highs of 76°F and overnight lows near 53°F, with 0.9 in of rain across 4.4 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 73°F by the end. The sky is clear or mostly clear about 65% 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 Gallup's 3rd-clearest and 10th-windiest month. For the whole year in context, see Gallup's year-round climate.

Daytime high
76°
4th warmest
Overnight low
53°
9th coldest
Rainfall
0.9 in
4.4 wet days
Daylight
12 h 12 min
6:03 AM – 6:16 PM
Cloud cover
32%
3rd clearest
Wind
7 mph
10th windiest
Solar energy
6.09 kWh/m²
Travel score
8.2
out of 10

Gallup is city in and county seat of McKinley County, New Mexico, United States.

Density
474/km²
people per km²
Founded
1881

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 80°F in the first days to 73°F by the end.

A typical September day in Gallup reaches about 76°F in the afternoon and slips back to 53°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 69°F and 83°F. Set against its neighbours, September runs about 6°F cooler than August and about 11°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18057
28057
38057
47956
57956
67956
77855
87855
97855
107855
117754
127754
137753
147753
157653
167652
177652
187652
197651
207551
217551
227551
237550
247450
257450
267449
277449
287349
297348
307348

How September really feels in Gallup

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
0
heat index over the day's high
Days feeling ≤ 32°F
0
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.

Gallup weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 21°1.05.64.29.90.1
Feb46° / 25°0.95.24.110.71.5
Mar55° / 31°0.95.7311.74.0
Apr63° / 38°0.641.512.96.4
May72° / 47°0.63.70.313.88.1
Jun83° / 56°0.31.7014.47.5
Jul85° / 62°1.26.9014.25.9
Aug82° / 60°1.37.4013.36.8
Sep76° / 53°0.94.4012.28.2
Oct65° / 42°0.84.10.611.17.2
Nov53° / 30°0.74.12.110.13.5
Dec42° / 22°1.04.84.59.60.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38119
48119
58119
68020
78119
88119
98119
108119
118119
128119
138218
148218
158317
168317
178317
188416
198416
208515
218515
228515
238515
248515
258515
268515
278515
288515
298515
308515

Chance of precipitation in September

Any precipitation

Gallup gets around 0.9 in of rain over 4.4 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 15% and peaks near 19% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
119
219
318
418
518
618
718
818
918
1018
1118
1217
1317
1417
1516
1616
1715
1814
1913
2013
2112
2212
2311
2411
2511
2611
2711
2811
2911
3011

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1973
2973
3973
4982
5982
6982
7991
8991
9991
10991
11991
12991
13991
14991
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277light breeze
287light breeze
298light breeze
308light 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 5:51 AM to 6:14 AM, and sunset from 6:38 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:516:38
212.85:526:37
312.75:536:35
412.75:536:34
512.65:546:32
612.65:556:31
712.65:566:29
812.55:566:28
912.55:576:27
1012.45:586:25
1112.45:596:23
1212.46:006:22
1312.36:006:20
1412.36:016:19
1512.36:026:17
1612.26:036:16
1712.26:036:14
1812.16:046:13
1912.16:056:11
2012.16:066:10
2112.06:076:08
2212.06:076:07
2312.06:086:05
2411.96:096:04
2511.96:106:02
2611.86:116:01
2711.86:115:59
2811.86:125:58
2911.76:135:56
3011.76:145:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.09 kWh/m².

For context, solar energy here swings from a low near 3.07 kWh/m² to a high of 8.47 kWh/m² in June across the year — September's 6.09 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.4Intense
46.4Intense
56.4Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.2Intense
116.2Intense
126.2Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.0Intense
186.0Intense
196.0Bright
206.0Bright
215.9Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.6Bright
Planning a trip in September

Is September a good time to visit Gallup?

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

8.2
Sightseeing
1st-best month of the year
7.1
Beach & pool
4th-best month of the year

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

What to pack for Gallup in September

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

In September, Gallup sees daytime highs around 76°F and nights near 53°F. Pack sun protection. Worth having: light clothes. About 4 days see rain.

sun protectionlight clothes

UV index in Gallup in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gallup peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highHighModerateJul 11UV 12Dec 16UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar7High
Apr6High
May9Very high
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate
Location & terrain

Where is Gallup?

Gallup sits at 35.5°N, 108.7°W, 6,512 ft above sea level, in United States. The nearest listed city is Farmington, 88 mi away.

Topography around Gallup

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

Within 2 miles, the terrain around Gallup has only modest variations in elevation — a maximum elevation change of 561 ft around an average of 6,611 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,555 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,940 ft.

The land around Gallup is covered by shrubs (29%), artificial surfaces (28%) and grassland (26%) within 2 miles, grassland (48%) and shrubs (25%) within 10 miles, and trees (39%) and grassland (36%) within 50 miles.

2 miles
561 ft
10 miles
1,555 ft
50 miles
3,940 ft
treesshrubsgrasslandartificial surfacesbare terrain
September weather nearby: Farmington 88 mi · Rio Rancho 119 mi · Enchanted Hills 122 mi · South Valley 122 mi · Albuquerque 122 mi · Los Lunas 124 mi · Durango 130 mi · Santa Fe 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
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 Gallup (35.5281°, -108.7426°, elevation 6,512 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).