Brownwood weather in September

In September, Brownwood sees average daytime highs of 87°F and overnight lows near 67°F, with 2.4 in of rain across 6 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 91°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 Brownwood's 3rd-clearest and 11th-windiest month. For the whole year in context, see Brownwood's year-round climate.

Daytime high
87°
4th warmest
Overnight low
67°
9th coldest
Rainfall
2.4 in
6 wet days
Daylight
12 h 12 min
6:25 AM – 6:36 PM
Cloud cover
40%
3rd clearest
Wind
8 mph
11th windiest
Solar energy
5.27 kWh/m²
Travel score
5.2
out of 10

Brownwood is city in Texas, United States of America.

Density
494/km²
people per km²

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 91°F in the first days to 85°F by the end.

A typical September day in Brownwood reaches about 87°F in the afternoon and slips back to 67°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 78°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)
19171
29171
39171
49070
59070
69070
78970
88969
98969
108969
118869
128868
138868
148868
158767
168767
178767
188766
198766
208666
218665
228665
238665
248564
258564
268564
278563
288563
298462
308462

How September really feels in Brownwood

Once humidity and wind are folded in, September averages 8 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
8
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.

Brownwood weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan58° / 37°1.650.410.25.1
Feb63° / 40°1.96.10.510.86.1
Mar70° / 47°2.77.7011.87.0
Apr78° / 55°2.76.6012.87.5
May85° / 64°3.710013.65.6
Jun91° / 71°2.77.60143.8
Jul95° / 74°1.65.2013.93.0
Aug94° / 74°1.55.9013.23.2
Sep87° / 67°2.46012.25.2
Oct78° / 56°3.06.7011.27.5
Nov67° / 46°2.05.70.110.47.1
Dec59° / 38°1.95.20.4105.3

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 18% of September, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37525
47525
57624
67525
77525
87426
97228
107228
117129
127129
137129
147030
157030
167030
177129
187129
197129
207228
217327
227426
237525
247525
257624
267723
277723
287723
297624
307624

Chance of precipitation in September

Any precipitation

Brownwood gets around 2.4 in of rain over 6 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 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
122
222
323
423
523
623
723
823
923
1023
1123
1223
1323
1423
1522
1622
1721
1821
1920
2020
2119
2218
2317
2416
2515
2615
2715
2815
2915
3015

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 37% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
161731405
271831395
381831386
491830376
591730376
6101730376
7111630366
8111630366
9121530366
10131430376
11131430376
12141330376
13151329376
14161329376
15171329375
16181328365
17191328364
18201427354
19221427344
20241426323
21261525313
22281524303
23301624282
24321723272
25341722252
26351821241
27371921231
28381920221
29391920211
30401919201

Wind in September

Winds average 8 mph in September.

Across September, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
279light breeze
289light breeze
299light breeze
309light 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 6:15 AM to 6:33 AM, and sunset from 6:56 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:156:56
212.66:166:55
312.66:176:53
412.66:176:52
512.66:186:51
612.56:186:50
712.56:196:48
812.56:206:47
912.46:206:46
1012.46:216:44
1112.46:216:43
1212.36:226:41
1312.36:236:40
1412.36:236:39
1512.26:246:37
1612.26:256:36
1712.26:256:35
1812.16:266:33
1912.16:266:32
2012.16:276:31
2112.06:286:29
2212.06:286:28
2312.06:296:26
2411.96:306:25
2511.96:306:24
2611.96:316:22
2711.86:326:21
2811.86:326:20
2911.86:336:18
3011.76:336:17

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.27 kWh/m².

For context, solar energy here swings from a low near 2.84 kWh/m² to a high of 6.96 kWh/m² in July across the year — September's 5.27 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.4Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
Planning a trip in September

Is September a good time to visit Brownwood?

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

5.2
Sightseeing
8th-best month of the year
7.5
Beach & pool
1st-best month of the year

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

What to pack for Brownwood in September

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

In September, Brownwood sees daytime highs around 87°F and nights near 67°F. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Brownwood 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 Brownwood peaks around July 18 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 18UV 11Dec 19UV 3
UV index (midday)Level
Jan4Moderate
Feb5High
Mar6High
Apr9Very high
May10Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Brownwood 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 Brownwood is worst in July — around 15 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 5 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1515 µg/m³Dec 175 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb6Good
Mar7Good
Apr8Good
May12Good
Jun12Moderate
Jul15Moderate
Aug11Good
Sep9Good
Oct5Good
Nov5Good
Dec5Good
Location & terrain

Where is Brownwood?

Brownwood sits at 31.7°N, 99.0°W, 1,365 ft above sea level, in United States. The nearest listed city is Stephenville, 58 mi away.

Topography around Brownwood

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

Within 2 miles, the terrain around Brownwood has only modest variations in elevation — a maximum elevation change of 276 ft around an average of 1,388 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 407 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,302 ft.

The land around Brownwood is covered by grassland (34%), trees (30%) and artificial surfaces (25%) within 2 miles, grassland (60%) and trees (27%) within 10 miles, and grassland (66%) and trees (25%) within 50 miles.

2 miles
276 ft
10 miles
407 ft
50 miles
1,302 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Stephenville 58 mi · Abilene 67 mi · Breckenridge 73 mi · Gatesville 76 mi · Copperas Cove 76 mi · Fort Cavazos 82 mi · Killeen 85 mi · San Angelo 87 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 Brownwood (31.7093°, -98.9912°, elevation 1,365 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).