Alamogordo weather in September

In September, Alamogordo sees average daytime highs of 80°F and overnight lows near 58°F, with 1.1 in of rain across 4.4 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 83°F in the first days to 77°F by the end. The sky is clear or mostly clear about 71% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Alamogordo's 6th-clearest and 10th-windiest month. For the whole year in context, see Alamogordo's year-round climate.

Daytime high: 80°; 4th warmest
Overnight low: 58°; 9th coldest
Rainfall: 1.1 in; 4.4 wet days
Daylight: 12 h 12 min; 5:52 AM – 6:04 PM
Cloud cover: 30%; 6th clearest
Wind: 5 mph; 10th windiest
Solar energy: 5.87 kWh/m²
Travel score: 7.9; out of 10

Alamogordo is city in Otero County, New Mexico, United States.

Density: 554/km²; people per km²
Founded: 1898

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

← August Alamogordo 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 83°F in the first days to 77°F by the end.

A typical September day in Alamogordo reaches about 80°F in the afternoon and slips back to 58°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 87°F. Set against its neighbours, September runs about 5°F cooler than August and about 9°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)	83	83	83	82	82	82	82	81	81	81	81	80	80	80	80	80	79	79	79	79	79	79	78	78	78	78	78	78	77	77
Avg low (°F)	61	61	61	60	60	60	60	60	59	59	59	59	59	58	58	58	58	57	57	57	57	56	56	56	56	55	55	55	55	54

	Avg high (°F)	Avg low (°F)
1	83	61
2	83	61
3	83	61
4	82	60
5	82	60
6	82	60
7	82	60
8	81	60
9	81	59
10	81	59
11	81	59
12	80	59
13	80	59
14	80	58
15	80	58
16	80	58
17	79	58
18	79	57
19	79	57
20	79	57
21	79	57
22	79	56
23	78	56
24	78	56
25	78	56
26	78	55
27	78	55
28	78	55
29	77	55
30	77	54

How September really feels in Alamogordo

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.

Alamogordo weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-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° / 30°	0.7	3.7	1.5	10.1	2.9
Feb	55° / 34°	0.7	4	1.1	10.8	4.3
Mar	63° / 39°	0.6	3.3	0.7	11.7	6.7
Apr	70° / 46°	0.3	1.7	0.1	12.8	8.4
May	79° / 54°	0.5	2.4	0	13.7	8.3
Jun	87° / 62°	0.6	3.5	0	14.1	5.7
Jul	87° / 64°	2.6	11.1	0	13.9	4.9
Aug	85° / 63°	1.7	8.3	0	13.2	5.8
Sep	80° / 58°	1.1	4.4	0	12.2	7.9
Oct	71° / 48°	0.8	3.6	0.1	11.2	8.2
Nov	59° / 37°	0.6	3	0.4	10.3	5.6
Dec	50° / 31°	0.9	4.2	1.8	9.9	2.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 16%. 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 (%)	83	83	82	82	83	83	82	82	82	82	83	83	83	84	84	84	84	85	85	86	86	86	87	87	87	87	87	88	87	87
Cloudier (%)	17	17	18	18	17	17	18	18	18	18	17	17	17	16	16	16	16	15	15	14	14	14	13	13	13	13	13	12	13	13

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	83	17
6	83	17
7	82	18
8	82	18
9	82	18
10	82	18
11	83	17
12	83	17
13	83	17
14	84	16
15	84	16
16	84	16
17	84	16
18	85	15
19	85	15
20	86	14
21	86	14
22	86	14
23	87	13
24	87	13
25	87	13
26	87	13
27	87	13
28	88	12
29	87	13
30	87	13

Chance of precipitation in September

Any precipitation

Alamogordo gets around 1.1 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 21% on the wettest days. The odds ease toward the end of the month.

	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	20	20	20	19	19	19	18	18	18	17	17	16	16	15	15	14	14	13	12	12	11	11	10	10	9	9	9	9

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

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 86% 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 (%)	78	78	78	79	80	80	81	81	82	82	82	83	83	84	84	85	85	87	88	88	89	90	90	92	92	93	94	94	95	95
Comfortable (%)	20	19	19	18	17	17	16	16	15	15	15	14	14	13	13	12	12	11	10	10	9	8	8	7	7	6	5	5	4	4
Humid (%)	2	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	2	2	2	2	2	2	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)
1	78	20	2
2	78	19	3
3	78	19	3
4	79	18	3
5	80	17	3
6	80	17	3
7	81	16	3
8	81	16	3
9	82	15	3
10	82	15	3
11	82	15	3
12	83	14	3
13	83	14	3
14	84	13	3
15	84	13	3
16	85	12	3
17	85	12	3
18	87	11	2
19	88	10	2
20	88	10	2
21	89	9	2
22	90	8	2
23	90	8	2
24	92	7	1
25	92	7	1
26	93	6	1
27	94	5	1
28	94	5	1
29	95	4	1
30	95	4	1

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 4 mph on the calmest days to 5 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)	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:42 AM to 6:02 AM, and sunset from 6:25 PM to 5:45 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)	12.7	12.7	12.6	12.6	12.6	12.5	12.5	12.5	12.4	12.4	12.4	12.3	12.3	12.3	12.2	12.2	12.2	12.1	12.1	12.1	12.0	12.0	12.0	11.9	11.9	11.9	11.8	11.8	11.7	11.7
Sunrise (AM)	5:42	5:43	5:44	5:44	5:45	5:46	5:46	5:47	5:48	5:48	5:49	5:49	5:50	5:51	5:51	5:52	5:53	5:54	5:54	5:55	5:56	5:56	5:57	5:58	5:58	5:59	6:00	6:00	6:01	6:02
Sunset (PM)	6:25	6:24	6:22	6:21	6:20	6:18	6:17	6:15	6:14	6:13	6:11	6:10	6:08	6:07	6:06	6:04	6:03	6:01	6:00	5:59	5:57	5:56	5:54	5:53	5:51	5:50	5:49	5:47	5:46	5:45

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.7	5:42	6:25
2	12.7	5:43	6:24
3	12.6	5:44	6:22
4	12.6	5:44	6:21
5	12.6	5:45	6:20
6	12.5	5:46	6:18
7	12.5	5:46	6:17
8	12.5	5:47	6:15
9	12.4	5:48	6:14
10	12.4	5:48	6:13
11	12.4	5:49	6:11
12	12.3	5:49	6:10
13	12.3	5:50	6:08
14	12.3	5:51	6:07
15	12.2	5:51	6:06
16	12.2	5:52	6:04
17	12.2	5:53	6:03
18	12.1	5:54	6:01
19	12.1	5:54	6:00
20	12.1	5:55	5:59
21	12.0	5:56	5:57
22	12.0	5:56	5:56
23	12.0	5:57	5:54
24	11.9	5:58	5:53
25	11.9	5:58	5:51
26	11.9	5:59	5:50
27	11.8	6:00	5:49
28	11.8	6:00	5:47
29	11.7	6:01	5:46
30	11.7	6:02	5:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.87 kWh/m².

For context, solar energy here swings from a low near 3.34 kWh/m² to a high of 7.94 kWh/m² in May across the year — September's 5.87 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)	6.2	6.2	6.1	6.1	6.1	6.0	6.0	6.0	6.0	5.9	5.9	5.9	5.9	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.7	5.7	5.7	5.7	5.7	5.6	5.6	5.6
Level	Intense	Intense	Intense	Intense	Intense	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

	Solar energy (kWh/m²)	Level
1	6.2	Intense
2	6.2	Intense
3	6.1	Intense
4	6.1	Intense
5	6.1	Intense
6	6.0	Intense
7	6.0	Intense
8	6.0	Bright
9	6.0	Bright
10	5.9	Bright
11	5.9	Bright
12	5.9	Bright
13	5.9	Bright
14	5.8	Bright
15	5.8	Bright
16	5.8	Bright
17	5.8	Bright
18	5.8	Bright
19	5.8	Bright
20	5.8	Bright
21	5.8	Bright
22	5.8	Bright
23	5.7	Bright
24	5.7	Bright
25	5.7	Bright
26	5.7	Bright
27	5.7	Bright
28	5.6	Bright
29	5.6	Bright
30	5.6	Bright

Planning a trip in September

Is September a good time to visit Alamogordo?

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

7.9

Sightseeing

4th-best month of the year

7.8

Beach & pool

3rd-best month of the year

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

What to pack for Alamogordo in September

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

In September, Alamogordo sees daytime highs around 80°F and nights near 58°F. Worth packing: light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Alamogordo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Alamogordo peaks around July 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	4	6	7	10	10	12	12	12	10	7	5	4
Level	Moderate	High	Very high	Very high	Very high	Extreme	Extreme	Extreme	Very high	High	High	Moderate

	UV index (midday)	Level
Jan	4	Moderate
Feb	6	High
Mar	7	Very high
Apr	10	Very high
May	10	Very high
Jun	12	Extreme
Jul	12	Extreme
Aug	12	Extreme
Sep	10	Very high
Oct	7	High
Nov	5	High
Dec	4	Moderate

Location & terrain

Where is Alamogordo?

Alamogordo sits at 32.9°N, 106.0°W, 4,341 ft above sea level, in United States. The nearest listed city is Las Cruces, 63 mi away.

Topography around Alamogordo

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

Within 2 miles, the terrain around Alamogordo has only modest variations in elevation — a maximum elevation change of 282 ft around an average of 4,360 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 5,518 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 7,933 ft.

The land around Alamogordo is covered by artificial surfaces (41%) and bare terrain (32%) within 2 miles, shrubs (37%) and bare terrain (34%) within 10 miles, and grassland (32%), shrubs (28%) and bare terrain (21%) within 50 miles.

2 miles

282 ft

artificial surfaces 41%

10 miles

5,518 ft

shrubs 37%

50 miles

7,933 ft

grassland 32%

treesshrubsgrasslandartificial surfacesbare terrain

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

September weather nearby: Las Cruces 63 mi · Sunland Park 85 mi · El Paso 85 mi · Horizon City 85 mi · Ciudad Juárez 86 mi · Socorro 88 mi · Socorro Mission Number 1 Colonia 89 mi · Roswell 90 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 Alamogordo (32.8995°, -105.9603°, elevation 4,341 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	83	61
2	83	61
3	83	61
4	82	60
5	82	60
6	82	60
7	82	60
8	81	60
9	81	59
10	81	59
11	81	59
12	80	59
13	80	59
14	80	58
15	80	58
16	80	58
17	79	58
18	79	57
19	79	57
20	79	57
21	79	57
22	79	56
23	78	56
24	78	56
25	78	56
26	78	55
27	78	55
28	78	55
29	77	55
30	77	54

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	83	17
6	83	17
7	82	18
8	82	18
9	82	18
10	82	18
11	83	17
12	83	17
13	83	17
14	84	16
15	84	16
16	84	16
17	84	16
18	85	15
19	85	15
20	86	14
21	86	14
22	86	14
23	87	13
24	87	13
25	87	13
26	87	13
27	87	13
28	88	12
29	87	13
30	87	13

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

	Dry (%)	Comfortable (%)	Humid (%)
1	78	20	2
2	78	19	3
3	78	19	3
4	79	18	3
5	80	17	3
6	80	17	3
7	81	16	3
8	81	16	3
9	82	15	3
10	82	15	3
11	82	15	3
12	83	14	3
13	83	14	3
14	84	13	3
15	84	13	3
16	85	12	3
17	85	12	3
18	87	11	2
19	88	10	2
20	88	10	2
21	89	9	2
22	90	8	2
23	90	8	2
24	92	7	1
25	92	7	1
26	93	6	1
27	94	5	1
28	94	5	1
29	95	4	1
30	95	4	1

	Avg high (°F)	Avg low (°F)
1	83	61
2	83	61
3	83	61
4	82	60
5	82	60
6	82	60
7	82	60
8	81	60
9	81	59
10	81	59
11	81	59
12	80	59
13	80	59
14	80	58
15	80	58
16	80	58
17	79	58
18	79	57
19	79	57
20	79	57
21	79	57
22	79	56
23	78	56
24	78	56
25	78	56
26	78	55
27	78	55
28	78	55
29	77	55
30	77	54

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	83	17
6	83	17
7	82	18
8	82	18
9	82	18
10	82	18
11	83	17
12	83	17
13	83	17
14	84	16
15	84	16
16	84	16
17	84	16
18	85	15
19	85	15
20	86	14
21	86	14
22	86	14
23	87	13
24	87	13
25	87	13
26	87	13
27	87	13
28	88	12
29	87	13
30	87	13

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

	Dry (%)	Comfortable (%)	Humid (%)
1	78	20	2
2	78	19	3
3	78	19	3
4	79	18	3
5	80	17	3
6	80	17	3
7	81	16	3
8	81	16	3
9	82	15	3
10	82	15	3
11	82	15	3
12	83	14	3
13	83	14	3
14	84	13	3
15	84	13	3
16	85	12	3
17	85	12	3
18	87	11	2
19	88	10	2
20	88	10	2
21	89	9	2
22	90	8	2
23	90	8	2
24	92	7	1
25	92	7	1
26	93	6	1
27	94	5	1
28	94	5	1
29	95	4	1
30	95	4	1

	Avg high (°F)	Avg low (°F)
1	83	61
2	83	61
3	83	61
4	82	60
5	82	60
6	82	60
7	82	60
8	81	60
9	81	59
10	81	59
11	81	59
12	80	59
13	80	59
14	80	58
15	80	58
16	80	58
17	79	58
18	79	57
19	79	57
20	79	57
21	79	57
22	79	56
23	78	56
24	78	56
25	78	56
26	78	55
27	78	55
28	78	55
29	77	55
30	77	54

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	83	17
6	83	17
7	82	18
8	82	18
9	82	18
10	82	18
11	83	17
12	83	17
13	83	17
14	84	16
15	84	16
16	84	16
17	84	16
18	85	15
19	85	15
20	86	14
21	86	14
22	86	14
23	87	13
24	87	13
25	87	13
26	87	13
27	87	13
28	88	12
29	87	13
30	87	13

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

	Dry (%)	Comfortable (%)	Humid (%)
1	78	20	2
2	78	19	3
3	78	19	3
4	79	18	3
5	80	17	3
6	80	17	3
7	81	16	3
8	81	16	3
9	82	15	3
10	82	15	3
11	82	15	3
12	83	14	3
13	83	14	3
14	84	13	3
15	84	13	3
16	85	12	3
17	85	12	3
18	87	11	2
19	88	10	2
20	88	10	2
21	89	9	2
22	90	8	2
23	90	8	2
24	92	7	1
25	92	7	1
26	93	6	1
27	94	5	1
28	94	5	1
29	95	4	1
30	95	4	1