College Station weather in September

In September, College Station sees average daytime highs of 90°F and overnight lows near 70°F, with 3.0 in of rain across 7.6 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 93°F in the first days to 87°F by the end. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels oppressive.

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 College Station's 2nd-clearest and 11th-windiest month. For the whole year in context, see College Station's year-round climate.

Daytime high
90°
4th warmest
Overnight low
70°
9th coldest
Rainfall
3.0 in
7.6 wet days
Daylight
12 h 12 min
6:14 AM – 6:25 PM
Cloud cover
45%
2nd clearest
Wind
6 mph
11th windiest
Solar energy
5.12 kWh/m²
Travel score
4.3
out of 10

College Station is city in Brazos County, Texas, United States.

Density
840/km²
people per km²
Founded
1938

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 93°F in the first days to 87°F by the end.

A typical September day in College Station reaches about 90°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 82°F and 97°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
29374
39374
49273
59273
69273
79273
89273
99172
109172
119172
129172
139171
149071
159071
169071
179070
188970
198970
208969
218969
228869
238868
248868
258867
268767
278767
288766
298766
308666

How September really feels in College Station

Once humidity and wind are folded in, September averages 21 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
21
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.

College Station weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan61° / 42°3.48.310.25.2
Feb64° / 45°3.08.910.95.9
Mar71° / 52°3.6911.86.8
Apr78° / 58°4.08.512.77.0
May85° / 67°4.21013.55.3
Jun91° / 73°3.31013.93.7
Jul95° / 76°1.9713.82.8
Aug95° / 76°2.57.213.12.6
Sep90° / 70°3.07.612.24.3
Oct81° / 60°4.07.711.26.9
Nov70° / 50°3.47.910.57.0
Dec62° / 43°3.88.710.15.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16337
26337
36337
46337
56238
66238
76238
86238
96238
106238
116337
126337
136238
146238
156238
166337
176436
186436
196535
206535
216733
226832
236931
247129
257228
267228
277327
287327
297327
307327

Chance of precipitation in September

Any precipitation

College Station gets around 3.0 in of rain over 7.6 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 26% and peaks near 30% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
330
430
530
630
730
829
929
1029
1128
1228
1328
1427
1527
1627
1726
1825
1925
2024
2123
2222
2322
2421
2521
2621
2721
2821
2921
3021

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 65% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1351330472
2351330472
3461329462
4461429452
5561429442
6561429442
7571329432
8671329432
9671329422
10771329422
11781329412
12781329402
13881329402
14891329392
15991329382
16991329372
171091429362
1811101428352
1912101428342
2014111527322
2115111526312
2217111526292
2318121625282
2420121624262
2521121624252
2623121723241
2724121723231
2825121723221
2926131723211
3027131723201

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
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 6:05 AM to 6:23 AM, and sunset from 6:45 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:056:45
212.66:066:43
312.66:076:42
412.66:076:41
512.56:086:40
612.56:086:38
712.56:096:37
812.46:106:36
912.46:106:34
1012.46:116:33
1112.36:116:32
1212.36:126:30
1312.36:126:29
1412.26:136:28
1512.26:146:26
1612.26:146:25
1712.26:156:24
1812.16:156:22
1912.16:166:21
2012.16:176:20
2112.06:176:19
2212.06:186:17
2312.06:186:16
2411.96:196:15
2511.96:196:13
2611.96:206:12
2711.86:216:11
2811.86:216:09
2911.86:226:08
3011.76:236:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.12 kWh/m².

For context, solar energy here swings from a low near 2.58 kWh/m² to a high of 6.56 kWh/m² in July across the year — September's 5.12 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.4Bright
65.3Bright
75.3Bright
85.3Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.8Bright
Planning a trip in September

Is September a good time to visit College Station?

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

4.3
Sightseeing
9th-best month of the year
6.9
Beach & pool
3rd-best month of the year

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

What to pack for College Station in September

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

In September, College Station sees daytime highs around 90°F and nights near 70°F. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in College Station 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 College Station peaks around July 24 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 24UV 11Dec 21UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr9Very high
May10Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in College Station 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 College Station is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1520 µg/m³Dec 187 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar11Good
Apr11Good
May15Moderate
Jun17Moderate
Jul21Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is College Station?

College Station sits at 30.6°N, 96.3°W, 338 ft above sea level, in United States. The nearest listed city is Bryan, 3.7 mi away.

Topography around College Station

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

Within 2 miles, the terrain around College Station has only modest variations in elevation — a maximum elevation change of 148 ft around an average of 318 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 246 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 551 ft.

The land around College Station is covered by artificial surfaces (58%) and trees (26%) within 2 miles, trees (40%) and grassland (39%) within 10 miles, and grassland (53%) and trees (40%) within 50 miles.

2 miles
148 ft
10 miles
246 ft
50 miles
551 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Bryan 3.7 mi · Brenham 32 mi · Huntsville 47 mi · Conroe 57 mi · Cypress 59 mi · The Woodlands 60 mi · Taylor 64 mi · Katy 66 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 College Station (30.628°, -96.3344°, elevation 338 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).