Marshall weather in September

In September, Marshall sees average daytime highs of 88°F and overnight lows near 68°F, with 3.2 in of rain across 7.3 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 91°F in the first days to 84°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 Marshall's 2nd-clearest and 10th-windiest month. For the whole year in context, see Marshall's year-round climate.

Daytime high
88°
4th warmest
Overnight low
68°
9th coldest
Rainfall
3.2 in
7.3 wet days
Daylight
12 h 12 min
6:06 AM – 6:18 PM
Cloud cover
43%
2nd clearest
Wind
5 mph
10th windiest
Solar energy
5.05 kWh/m²
Travel score
5.0
out of 10

Marshall is small city and county seat of Harrison County, Texas, United States.

Density
310/km²
people per km²
Founded
1841

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 84°F by the end.

A typical September day in Marshall reaches about 88°F in the afternoon and slips back to 68°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 95°F. Set against its neighbours, September runs about 6°F cooler than August and about 10°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
19172
29172
39172
49171
59171
69071
79071
89071
99070
108970
118970
128969
138969
148869
158869
168868
178768
188768
198767
208767
218667
228666
238666
248565
258565
268565
278564
288464
298463
308363

How September really feels in Marshall

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.

Marshall 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
Jan57° / 39°3.99.310.14.1
Feb61° / 43°4.09.210.85.0
Mar69° / 49°4.710.611.86.3
Apr76° / 56°4.99.412.87.0
May83° / 65°4.211.613.65.6
Jun90° / 72°3.81114.13.8
Jul93° / 75°2.89.413.93.0
Aug93° / 74°2.78.413.23.1
Sep88° / 68°3.27.312.25.0
Oct78° / 57°4.27.611.27.3
Nov66° / 47°3.9810.36.5
Dec58° / 41°4.59.29.94.5

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 17% of September, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16337
26436
36436
46436
56535
66535
76535
86634
96634
106634
116634
126634
136634
146634
156733
166733
176733
186733
196733
206832
216832
226931
237030
247129
257129
267228
277228
287228
297327
307228

Chance of precipitation in September

Any precipitation

Marshall gets around 3.2 in of rain over 7.3 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 24% and peaks near 27% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
127
227
327
427
527
627
726
826
926
1026
1126
1226
1326
1426
1526
1626
1725
1825
1925
2024
2123
2223
2322
2422
2521
2621
2720
2820
2920
3020

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 56% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1361830412
2361929402
3471929402
4581928392
5581928382
6681928371
7791828371
8891828361
9891828351
109101828351
1110101728341
1210101728341
1311101728331
1411111728321
1512111728311
1613111728301
1713111728291
1814121828281
1915121828261
2017121827251
2118121827241
2219131926221
2321131925211
2422141925201
2524141924181
2625151923171
2727151922161
2828151922151
2929161921141
3031161920130

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:56 AM to 6:15 AM, and sunset from 6:38 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:566:38
212.75:576:37
312.65:576:36
412.65:586:34
512.65:596:33
612.55:596:32
712.56:006:30
812.56:016:29
912.46:016:27
1012.46:026:26
1112.46:036:25
1212.36:036:23
1312.36:046:22
1412.36:056:21
1512.26:056:19
1612.26:066:18
1712.26:076:16
1812.16:076:15
1912.16:086:14
2012.16:096:12
2112.06:096:11
2212.06:106:09
2312.06:106:08
2411.96:116:07
2511.96:126:05
2611.96:136:04
2711.86:136:02
2811.86:146:01
2911.86:156:00
3011.76:155:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.05 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 6.39 kWh/m² in July across the year — September's 5.05 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
Planning a trip in September

Is September a good time to visit Marshall?

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

5.0
Sightseeing
6th-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Marshall in September

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

In September, Marshall sees daytime highs around 88°F and nights near 68°F. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Marshall 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 Marshall peaks around June 18 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 18UV 10Dec 20UV 3
UV index (midday)Level
Jan4Moderate
Feb5High
Mar6High
Apr10Very high
May10Very high
Jun10Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Marshall 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 Marshall is worst in July — around 22 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (January, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1622 µg/m³Jan 188 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr11Good
May15Moderate
Jun19Moderate
Jul22Moderate
Aug18Moderate
Sep16Moderate
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Marshall?

Marshall sits at 32.5°N, 94.4°W, 413 ft above sea level, in United States. The nearest listed city is Longview, 22 mi away.

Topography around Marshall

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

Within 2 miles, the terrain around Marshall has only modest variations in elevation — a maximum elevation change of 203 ft around an average of 397 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 430 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 623 ft.

The land around Marshall is covered by trees (66%) within 2 miles, trees (71%) and grassland (26%) within 10 miles, and trees (72%) and grassland (23%) within 50 miles.

2 miles
203 ft
10 miles
430 ft
50 miles
623 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Longview 22 mi · Shreveport 36 mi · Bossier City 37 mi · Mount Pleasant 55 mi · Tyler 56 mi · Texarkana 63 mi · Texarkana 65 mi · Nacogdoches 67 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 Marshall (32.5449°, -94.3674°, elevation 413 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).