Cookeville weather in September

In September, Cookeville sees average daytime highs of 80°F and overnight lows near 62°F, with 3.6 in of rain across 8.7 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 84°F in the first days to 76°F by the end. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Cookeville's 2nd-clearest and 9th-windiest month. For the whole year in context, see Cookeville's year-round climate.

Daytime high
80°
4th warmest
Overnight low
62°
9th coldest
Rainfall
3.6 in
8.7 wet days
Daylight
12 h 12 min
5:30 AM – 5:43 PM
Cloud cover
51%
2nd clearest
Wind
5 mph
9th windiest
Solar energy
4.6 kWh/m²
Travel score
6.7
out of 10

Cookeville is city in Tennessee, United States.

Density
377/km²
people per km²
Founded
1854

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 84°F in the first days to 76°F by the end.

A typical September day in Cookeville reaches about 80°F in the afternoon and slips back to 62°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 89°F. Set against its neighbours, September runs about 5°F cooler than August and about 11°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18467
28466
38466
48466
58365
68365
78365
88364
98264
108264
118263
128263
138163
148162
158162
168062
178061
188061
197961
207960
217960
227859
237859
247859
257758
267758
277657
287657
297657
307656

How September really feels in Cookeville

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Cookeville 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 daysSnow daysDaylight (hours)Travel score
Jan46° / 31°4.511.22.69.81.3
Feb50° / 34°4.811.32.410.62.2
Mar59° / 41°5.212.61.111.74.3
Apr69° / 49°4.911.80.212.96.0
May76° / 59°4.712.9013.96.3
Jun83° / 67°4.313.1014.45.3
Jul86° / 70°4.813.7014.24.6
Aug85° / 68°3.511.5013.45.0
Sep80° / 62°3.68.7012.26.7
Oct70° / 50°3.48.20.111.16.9
Nov58° / 40°4.19.20.310.14.5
Dec49° / 34°5.211.81.79.62.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 41%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55842
65842
75941
85941
95941
105941
115941
125941
135941
145941
155842
165743
175743
185743
195644
205644
215644
225743
235743
245941
256040
266040
276238
286238
296337
306436

Chance of precipitation in September

Any precipitation

Cookeville gets around 3.6 in of rain over 8.7 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 29% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
133
232
332
431
530
630
729
828
927
1027
1127
1227
1327
1427
1528
1629
1729
1830
1930
2031
2131
2231
2330
2430
2529
2628
2728
2827
2926
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 29% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1712264412
2813264311
3913274110
4101428409
5111528388
6121629368
7131729347
8141730336
9151830315
10161931304
11182031284
12192030273
13202130263
14212130253
15222130242
16242229232
17252229222
18262229212
19282228202
20292228192
21312227182
22332227171
23352226161
24372225151
25392124141
26412123131
27432222131
28452221121
29462220111
30482219101

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
225calm
235calm
245calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 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 66 minutes over September. Sunrise moves from 5:18 AM to 5:41 AM, and sunset from 6:06 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:186:06
212.85:186:04
312.75:196:03
412.75:206:01
512.75:216:00
612.65:225:58
712.65:225:57
812.55:235:55
912.55:245:54
1012.55:255:52
1112.45:265:51
1212.45:265:49
1312.35:275:48
1412.35:285:46
1512.35:295:45
1612.25:305:43
1712.25:305:42
1812.15:315:40
1912.15:325:38
2012.15:335:37
2112.05:345:35
2212.05:345:34
2312.05:355:32
2411.95:365:31
2511.95:375:29
2611.85:385:28
2711.85:395:26
2811.85:395:25
2911.75:405:23
3011.75:415:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.6 kWh/m².

For context, solar energy here swings from a low near 1.99 kWh/m² to a high of 6.11 kWh/m² in June across the year — September's 4.6 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.5Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Is September a good time to visit Cookeville?

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

6.7
Sightseeing
2nd-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Cookeville in September

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

In September, Cookeville sees daytime highs around 80°F and nights near 62°F. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Cookeville in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cookeville peaks around July 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 14UV 10Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul10Extreme
Aug8Very high
Sep7High
Oct5Moderate
Nov4Moderate
Dec2Moderate

Air quality in Cookeville 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 Cookeville is worst in July — around 18 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1617 µg/m³Dec 226 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar10Good
Apr10Good
May13Moderate
Jun15Moderate
Jul18Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov6Good
Dec6Good
Location & terrain

Where is Cookeville?

Cookeville sits at 36.2°N, 85.5°W, 1,096 ft above sea level, in United States. The nearest listed city is Lebanon, 44 mi away.

Topography around Cookeville

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

Within 2 miles, the terrain around Cookeville has only modest variations in elevation — a maximum elevation change of 249 ft around an average of 1,109 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,388 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,575 ft.

The land around Cookeville is covered by trees (43%), grassland (28%) and artificial surfaces (27%) within 2 miles, trees (57%) and grassland (37%) within 10 miles, and trees (70%) and grassland (25%) within 50 miles.

2 miles
249 ft
10 miles
1,388 ft
50 miles
2,575 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Lebanon 44 mi · Murfreesboro 54 mi · Gallatin 55 mi · Mount Juliet 57 mi · Smyrna 58 mi · La Vergne 61 mi · Hermitage 63 mi · Hendersonville 63 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 Cookeville (36.1628°, -85.5016°, elevation 1,096 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).