Longview weather in September

In September, Longview sees average daytime highs of 88°F and overnight lows near 68°F, with 3.3 in of rain across 7 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 85°F by the end. The sky is clear or mostly clear about 52% 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 Longview's 2nd-clearest and 10th-windiest month. For the whole year in context, see Longview's year-round climate.

Daytime high
88°
4th warmest
Overnight low
68°
9th coldest
Rainfall
3.3 in
7 wet days
Daylight
12 h 12 min
6:07 AM – 6:19 PM
Cloud cover
43%
2nd clearest
Wind
6 mph
10th windiest
Solar energy
5.04 kWh/m²
Travel score
4.9
out of 10

Longview is city in Texas, United States.

Density
569/km²
people per km²
Founded
1871

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 Longview 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 80°F and 96°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)
19272
29272
39172
49172
59171
69171
79171
89071
99070
109070
118970
128970
138969
148969
158969
168868
178868
188868
198767
208767
218767
228766
238666
248665
258665
268564
278564
288564
298463
308463

How September really feels in Longview

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.

Longview 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°3.7910.14.1
Feb61° / 42°4.18.710.85.1
Mar69° / 49°4.410.511.86.3
Apr76° / 56°4.49.312.87.0
May83° / 65°4.511.213.65.7
Jun90° / 72°3.510.214.13.9
Jul94° / 75°2.48.513.93.0
Aug94° / 74°2.57.113.23.0
Sep88° / 68°3.3712.24.9
Oct78° / 57°4.17.411.27.3
Nov67° / 47°3.88.310.36.5
Dec58° / 40°4.28.99.94.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% 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 (%)
16436
26436
36535
46535
56634
66535
76634
86634
96634
106733
116733
126733
136733
146733
156733
166733
176733
186832
196832
206832
216931
227030
237129
247228
257228
267228
277426
287426
297426
307327

Chance of precipitation in September

Any precipitation

Longview gets around 3.3 in of rain over 7 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 23% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
326
426
526
626
726
825
925
1025
1125
1225
1325
1425
1525
1625
1724
1824
1923
2023
2122
2222
2321
2420
2520
2620
2719
2819
2919
3019

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 27% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1471933362
2471932362
3581932351
4681931351
5691930341
6791930341
7891930331
8991929331
99101929321
1010101829321
1111101828321
1212101828311
1312101828301
1413101828301
1514111828291
1615111828281
1716111827271
1817111827261
1918121927241
2019121926231
2120121925221
2222131925211
2323131924201
2425141923191
2526141923171
2628151922161
2729151921151
2830161921141
2931161920130
3033161920120

Wind in September

Winds average 6 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
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
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 5:58 AM to 6:17 AM, and sunset from 6:40 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:586:40
212.75:586:38
312.65:596:37
412.66:006:36
512.66:006:34
612.56:016:33
712.56:026:32
812.56:026:30
912.46:036:29
1012.46:036:28
1112.46:046:26
1212.36:056:25
1312.36:056:23
1412.36:066:22
1512.26:076:21
1612.26:076:19
1712.26:086:18
1812.16:096:16
1912.16:096:15
2012.16:106:14
2112.06:116:12
2212.06:116:11
2312.06:126:09
2411.96:136:08
2511.96:136:07
2611.96:146:05
2711.86:156:04
2811.86:156:03
2911.86:166:01
3011.76:176:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.04 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 6.42 kWh/m² in July across the year — September's 5.04 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
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 Longview?

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

4.9
Sightseeing
7th-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Longview in September

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

In September, Longview 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 Longview 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 Longview 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 Longview 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 Longview 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 Longview?

Longview sits at 32.5°N, 94.7°W, 371 ft above sea level, in United States. The nearest listed city is Marshall, 22 mi away.

Topography around Longview

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

Within 2 miles, the terrain around Longview has only modest variations in elevation — a maximum elevation change of 180 ft around an average of 341 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 367 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 581 ft.

The land around Longview is covered by trees (52%) and artificial surfaces (32%) within 2 miles, trees (64%) and grassland (27%) within 10 miles, and trees (71%) and grassland (26%) within 50 miles.

2 miles
180 ft
10 miles
367 ft
50 miles
581 ft
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Marshall 22 mi · Tyler 34 mi · Mount Pleasant 47 mi · Shreveport 58 mi · Bossier City 59 mi · Nacogdoches 62 mi · Sulphur Springs 66 mi · Palestine 73 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 Longview (32.5007°, -94.7405°, elevation 371 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).