Tyler weather in September

In September, Tyler sees average daytime highs of 88°F and overnight lows near 69°F, with 2.9 in of rain across 6.7 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 Tyler's 2nd-clearest and 10th-windiest month. For the whole year in context, see Tyler's year-round climate.

Daytime high
88°
4th warmest
Overnight low
69°
9th coldest
Rainfall
2.9 in
6.7 wet days
Daylight
12 h 12 min
6:10 AM – 6:21 PM
Cloud cover
43%
2nd clearest
Wind
6 mph
10th windiest
Solar energy
5.05 kWh/m²
Travel score
4.9
out of 10

Tyler is city in and county seat of Smith County, Texas, United States.

Density
701/km²
people per km²
Founded
1846

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 Tyler reaches about 88°F in the afternoon and slips back to 69°F overnight — a 19°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)
19273
29273
39172
49172
59172
69172
79071
89071
99071
109071
118970
128970
138970
148970
158969
168869
178869
188868
198768
208767
218767
228767
238666
248666
258665
268565
278565
288564
298564
308464

How September really feels in Tyler

Once humidity and wind are folded in, September averages 16 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
16
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.

Tyler 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°3.58.310.14.3
Feb61° / 43°3.98.210.85.2
Mar68° / 49°4.21011.86.4
Apr76° / 56°4.19.212.87.0
May83° / 65°4.511.213.65.7
Jun90° / 72°3.41014.14.0
Jul94° / 75°2.28.513.93.1
Aug94° / 75°2.46.713.23.1
Sep88° / 69°2.96.712.24.9
Oct78° / 58°4.27.511.27.3
Nov67° / 48°3.88.110.36.6
Dec59° / 41°4.18.89.94.7

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 (%)
16634
26634
36634
46634
56535
66634
76634
86634
96535
106535
116535
126535
136535
146535
156535
166535
176535
186733
196733
206832
216931
227030
237129
247228
257327
267327
277426
287525
297525
307426

Chance of precipitation in September

Any precipitation

Tyler gets around 2.9 in of rain over 6.7 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 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
524
624
724
824
924
1024
1124
1225
1325
1425
1525
1624
1724
1824
1923
2023
2122
2221
2320
2419
2518
2618
2717
2817
2917
3017

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 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 (%)
1371735362
2471734352
3581833342
4581833342
5681833341
6791832331
7891832331
8891831321
9991831321
101091731321
111191730321
121191730311
1312101730311
1413101730301
1513101729291
1614101729281
1715111829271
1816111828261
1918111828251
2019121827231
2120121827221
2222131826211
2323131825191
2425141825181
2526151824161
2628151824151
2729161823141
2830161922130
2931161922120
3032161921110

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 6 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
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 6:00 AM to 6:19 AM, and sunset from 6:42 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:006:42
212.76:016:41
312.66:016:39
412.66:026:38
512.66:036:37
612.56:036:35
712.56:046:34
812.56:056:32
912.46:056:31
1012.46:066:30
1112.46:066:28
1212.36:076:27
1312.36:086:26
1412.36:086:24
1512.26:096:23
1612.26:106:21
1712.26:106:20
1812.16:116:19
1912.16:126:17
2012.16:126:16
2112.06:136:14
2212.06:146:13
2312.06:146:12
2411.96:156:10
2511.96:166:09
2611.96:166:08
2711.86:176:06
2811.86:186:05
2911.86:186:03
3011.76:196:02

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 2.46 kWh/m² to a high of 6.5 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
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Is September a good time to visit Tyler?

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
7.3
Beach & pool
1st-best month of the year

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

What to pack for Tyler in September

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

In September, Tyler sees daytime highs around 88°F and nights near 69°F. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Tyler 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 Tyler peaks around June 20 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 20UV 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 Tyler 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 Tyler 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 1620 µg/m³Dec 197 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar11Good
Apr11Good
May14Moderate
Jun17Moderate
Jul21Moderate
Aug16Moderate
Sep13Moderate
Oct8Good
Nov8Good
Dec7Good
Location & terrain

Where is Tyler?

Tyler sits at 32.4°N, 95.3°W, 538 ft above sea level, in United States. The nearest listed city is Longview, 34 mi away.

Topography around Tyler

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

Within 2 miles, the terrain around Tyler has only modest variations in elevation — a maximum elevation change of 184 ft around an average of 545 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 Tyler is covered by trees (49%) and artificial surfaces (37%) within 2 miles, trees (63%) and grassland (28%) within 10 miles, and trees (61%) and grassland (36%) within 50 miles.

2 miles
184 ft
10 miles
367 ft
50 miles
581 ft
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Longview 34 mi · Palestine 45 mi · Marshall 56 mi · Sulphur Springs 57 mi · Mount Pleasant 59 mi · Terrell 63 mi · Nacogdoches 64 mi · Corsicana 70 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 Tyler (32.3513°, -95.3011°, elevation 538 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).