Belton weather in September

In September, Belton sees average daytime highs of 89°F and overnight lows near 70°F, with 2.7 in of rain across 6.4 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 86°F by the end. The sky is clear or mostly clear about 53% 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 Belton's 2nd-clearest and 12th-windiest month. For the whole year in context, see Belton's year-round climate.

Daytime high
89°
4th warmest
Overnight low
70°
9th coldest
Rainfall
2.7 in
6.4 wet days
Daylight
12 h 12 min
6:19 AM – 6:30 PM
Cloud cover
42%
2nd clearest
Wind
7 mph
12th windiest
Solar energy
5.18 kWh/m²
Travel score
4.7
out of 10

Belton is city in Texas, USA.

Density
398/km²
people per km²
Founded
1850

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 86°F by the end.

A typical September day in Belton reaches about 89°F in the afternoon and slips back to 70°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 81°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)
19374
29273
39273
49273
59273
69173
79172
89172
99072
109071
119071
129071
138971
148970
158970
168970
178870
188869
198869
208869
218868
228768
238767
248767
258767
268766
278666
288666
298665
308565

How September really feels in Belton

Once humidity and wind are folded in, September averages 18 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
18
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.

Belton 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
Jan60° / 41°2.56.710.25.3
Feb64° / 44°2.57.110.96.1
Mar71° / 51°3.18.711.86.8
Apr78° / 58°3.07.912.77.2
May85° / 66°4.610.613.65.4
Jun91° / 73°2.87.8143.9
Jul95° / 76°1.45.313.82.8
Aug95° / 75°2.25.813.12.8
Sep89° / 70°2.76.412.24.7
Oct80° / 60°4.0711.27.2
Nov69° / 50°2.76.710.47.1
Dec61° / 42°3.07.1105.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% 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 (%)
17129
27129
36931
46931
56931
66832
76832
86733
96733
106634
116634
126634
136634
146634
156634
166733
176832
186931
197030
207129
217228
227327
237426
247624
257624
267723
277822
287822
297723
307723

Chance of precipitation in September

Any precipitation

Belton gets around 2.7 in of rain over 6.4 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 22% and peaks near 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
124
224
324
424
525
625
724
824
924
1024
1124
1224
1323
1423
1523
1622
1722
1821
1921
2020
2120
2219
2319
2418
2518
2618
2718
2817
2918
3018

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1361741320
2461841310
3471840310
4571839310
5571838311
6671838311
7761837311
8761837311
9861836311
10861736311
11961735321
12961735321
131071734321
141071734321
151171733321
161281732311
171391731310
181491730300
1915101729290
2016111728280
2118121727270
2219131726250
2321131725240
2422141824220
2523151823210
2625151822190
2726161922180
2827161922170
2928161922150
3029161921140

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
307calm

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 6:10 AM to 6:27 AM, and sunset from 6:49 PM to 6:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:106:49
212.66:106:48
312.66:116:47
412.66:116:46
512.56:126:44
612.56:136:43
712.56:136:42
812.46:146:40
912.46:146:39
1012.46:156:38
1112.36:166:36
1212.36:166:35
1312.36:176:34
1412.36:176:32
1512.26:186:31
1612.26:196:30
1712.26:196:28
1812.16:206:27
1912.16:206:26
2012.16:216:24
2112.06:226:23
2212.06:226:22
2312.06:236:20
2411.96:236:19
2511.96:246:18
2611.96:256:16
2711.86:256:15
2811.86:266:14
2911.86:276:12
3011.76:276:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.18 kWh/m².

For context, solar energy here swings from a low near 2.68 kWh/m² to a high of 6.81 kWh/m² in July across the year — September's 5.18 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
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 Belton?

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

4.7
Sightseeing
9th-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Belton in September

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

In September, Belton sees daytime highs around 89°F and nights near 70°F. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Belton 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 Belton 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 Belton 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 Belton is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1417 µg/m³Dec 127 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar9Good
Apr10Good
May14Moderate
Jun15Moderate
Jul18Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Belton?

Belton sits at 31.1°N, 97.5°W, 509 ft above sea level, in United States. The nearest listed city is Temple, 7.5 mi away.

Topography around Belton

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

Within 2 miles, the terrain around Belton has only modest variations in elevation — a maximum elevation change of 266 ft around an average of 581 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 515 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,371 ft.

The land around Belton is covered by trees (41%), grassland (33%) and artificial surfaces (24%) within 2 miles, grassland (40%) and trees (35%) within 10 miles, and grassland (51%) and trees (30%) within 50 miles.

2 miles
266 ft
10 miles
515 ft
50 miles
1,371 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Temple 7.5 mi · Harker Heights 12 mi · Killeen 16 mi · Fort Cavazos 19 mi · Copperas Cove 26 mi · Gatesville 31 mi · Georgetown 32 mi · Taylor 34 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 Belton (31.056°, -97.4644°, elevation 509 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).