Fort Cavazos weather in September

In September, Fort Cavazos sees average daytime highs of 88°F and overnight lows near 69°F, with 2.5 in of rain across 6.1 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 92°F in the first days to 85°F by the end. The sky is clear or mostly clear about 56% of the time in September, and the air most often feels muggy.

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 Fort Cavazos's 2nd-clearest and 12th-windiest month. For the whole year in context, see Fort Cavazos's year-round climate.

Daytime high
88°
4th warmest
Overnight low
69°
9th coldest
Rainfall
2.5 in
6.1 wet days
Daylight
12 h 12 min
6:20 AM – 6:31 PM
Cloud cover
41%
2nd clearest
Wind
7 mph
12th windiest
Solar energy
5.2 kWh/m²
Travel score
4.9
out of 10

Fort Cavazos is United States military post located in Killeen, Texas.

Density
735/km²
people per km²
Founded
1942

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 92°F in the first days to 85°F by the end.

A typical September day in Fort Cavazos reaches about 88°F in the afternoon and slips back to 69°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 80°F and 96°F. Set against its neighbours, September runs about 6°F cooler than August and about 9°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
19273
29273
39273
49172
59172
69172
79172
89071
99071
109071
118971
128970
138970
148970
158869
168869
178869
188869
198768
208768
218767
228767
238767
248766
258666
268666
278665
288565
298565
308564

How September really feels in Fort Cavazos

Once humidity and wind are folded in, September averages 15 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
15
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Fort Cavazos 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.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan59° / 40°2.36.710.25.1
Feb63° / 43°2.46.710.96.0
Mar70° / 50°3.18.611.86.8
Apr78° / 57°3.08.212.77.2
May84° / 65°4.310.813.65.5
Jun91° / 73°2.78.3143.8
Jul95° / 75°1.55.213.82.9
Aug95° / 75°1.95.813.12.9
Sep88° / 69°2.56.112.24.9
Oct79° / 59°3.77.311.27.2
Nov68° / 49°2.66.810.47.0
Dec61° / 41°2.86.9105.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% 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 29%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37129
47030
57030
67030
76931
86931
96832
106832
116832
126733
136733
146733
156733
166733
176931
186931
197030
207129
217228
227426
237525
247624
257723
267723
277723
287723
297723
307723

Chance of precipitation in September

Any precipitation

Fort Cavazos gets around 2.5 in of rain over 6.1 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 21% and peaks near 24% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
123
223
323
423
524
624
724
824
924
1024
1124
1224
1324
1423
1523
1622
1722
1821
1920
2020
2119
2218
2317
2417
2516
2616
2716
2816
2916
3017

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 53% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
148244222
248244122
358244022
468243922
568243923
678243823
788243823
887233724
997233724
10107223724
11107213625
12117213625
13128203625
14128203624
15138193524
16149193423
17159193423
181610193322
191711193221
201912193120
212012193019
222213192818
232314182816
242515182615
252616192614
262816192513
272917192412
283017192311
293117192310
30321819229

Wind in September

Winds average 7 mph in September, the calmest month.

Across September, daily wind ranges from about 7 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307light breeze

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 6:11 AM to 6:28 AM, and sunset from 6:51 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:116:51
212.66:116:50
312.66:126:48
412.66:136:47
512.56:136:46
612.56:146:44
712.56:146:43
812.46:156:42
912.46:166:40
1012.46:166:39
1112.36:176:38
1212.36:176:36
1312.36:186:35
1412.36:196:34
1512.26:196:32
1612.26:206:31
1712.26:206:30
1812.16:216:28
1912.16:226:27
2012.16:226:26
2112.06:236:24
2212.06:236:23
2312.06:246:22
2411.96:256:20
2511.96:256:19
2611.96:266:18
2711.86:276:16
2811.86:276:15
2911.86:286:14
3011.76:286:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.2 kWh/m².

For context, solar energy here swings from a low near 2.72 kWh/m² to a high of 6.85 kWh/m² in July across the year — September's 5.2 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.6Bright
35.6Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.8Bright
Planning a trip in September

Is September a good time to visit Fort Cavazos?

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

4.9
Sightseeing
9th-best month of the year
7.4
Beach & pool
1st-best month of the year

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

What to pack for Fort Cavazos in September

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

In September, Fort Cavazos sees daytime highs around 88°F and nights near 69°F. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Fort Cavazos in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fort Cavazos peaks around July 17 at about 10 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 17UV 10Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar6High
Apr9Very high
May10Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Fort Cavazos in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Fort Cavazos is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1517 µg/m³Dec 116 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar10Good
Apr10Good
May14Moderate
Jun15Moderate
Jul18Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is Fort Cavazos?

Fort Cavazos sits at 31.1°N, 97.8°W, 896 ft above sea level, in United States. The nearest listed city is Killeen, 3.1 mi away.

Topography around Fort Cavazos

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

Within 2 miles, the terrain around Fort Cavazos has only modest variations in elevation — a maximum elevation change of 226 ft around an average of 928 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 705 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,430 ft.

The land around Fort Cavazos is covered by artificial surfaces (43%) and grassland (37%) within 2 miles, grassland (47%) and trees (38%) within 10 miles, and grassland (50%) and trees (34%) within 50 miles.

2 miles
226 ft
10 miles
705 ft
50 miles
1,430 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Killeen 3.1 mi · Copperas Cove 7.5 mi · Harker Heights 7.5 mi · Belton 19 mi · Gatesville 21 mi · Temple 25 mi · Georgetown 35 mi · Leander 39 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 Fort Cavazos (31.1349°, -97.7756°, elevation 896 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).