Natchez weather in September

In September, Natchez sees average daytime highs of 88°F and overnight lows near 69°F, with 3.4 in of rain across 8.5 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 12th-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 46% 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 Natchez's 2nd-clearest and 9th-windiest month. For the whole year in context, see Natchez's year-round climate.

Daytime high
88°
4th warmest
Overnight low
69°
9th coldest
Rainfall
3.4 in
8.5 wet days
Daylight
12 h 12 min
5:54 AM – 6:06 PM
Cloud cover
47%
2nd clearest
Wind
5 mph
9th windiest
Solar energy
5.05 kWh/m²
Travel score
4.6
out of 10

Natchez is county seat of Adams County, Mississippi, United States.

Density
356/km²
people per km²
Founded
1716

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 Natchez 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 81°F and 95°F. Set against its neighbours, September runs about 4°F cooler than August and about 9°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
19173
29173
39172
49172
59172
69072
79072
89071
99071
109071
119071
128971
138970
148970
158970
168970
178869
188869
198869
208768
218768
228768
238767
248667
258666
268666
278566
288565
298565
308464

How September really feels in Natchez

Once humidity and wind are folded in, September averages 19 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
19
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.

Natchez weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan59° / 41°4.79.610.24.7
Feb63° / 44°4.49.710.85.5
Mar70° / 51°4.510.611.86.5
Apr77° / 57°4.48.812.77.1
May84° / 66°3.69.813.65.7
Jun90° / 73°3.811.9143.8
Jul92° / 75°3.713.913.83.2
Aug92° / 74°3.611.713.23.2
Sep88° / 69°3.48.512.24.6
Oct79° / 58°3.57.311.27.2
Nov69° / 48°3.77.910.46.9
Dec61° / 43°4.59.2105.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% 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 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25941
35941
46040
56040
66040
76139
86238
96238
106337
116337
126337
136436
146337
156337
166337
176337
186337
196337
206337
216436
226436
236535
246634
256634
266733
276832
286931
296931
306931

Chance of precipitation in September

Any precipitation

Natchez gets around 3.4 in of rain over 8.5 wet days in September, the driest month. 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 35% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
235
335
435
534
634
733
832
931
1031
1130
1230
1330
1429
1529
1629
1729
1829
1928
2028
2127
2226
2325
2425
2524
2624
2723
2822
2922
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 37% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
116925545
216926544
327926524
4281026504
5281026504
6291126483
7391127473
8391127463
94101227453
104101227443
115101227432
125101327422
136101327422
146101427402
157101427392
167101428382
178101528372
189101528352
1910101528342
2011111629322
2112111629302
2213111629292
2315111629272
2416121629252
2517121728242
2618121728222
2720131827212
2821131827202
2922141826181
3023141925171

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
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 5:45 AM to 6:03 AM, and sunset from 6:26 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:456:26
212.65:466:24
312.65:466:23
412.65:476:22
512.55:476:20
612.55:486:19
712.55:496:18
812.55:496:16
912.45:506:15
1012.45:516:14
1112.45:516:12
1212.35:526:11
1312.35:526:10
1412.35:536:08
1512.25:546:07
1612.25:546:06
1712.25:556:04
1812.15:556:03
1912.15:566:02
2012.15:576:00
2112.05:575:59
2212.05:585:57
2312.05:595:56
2411.95:595:55
2511.96:005:53
2611.96:005:52
2711.86:015:51
2811.86:025:49
2911.86:025:48
3011.76:035:47

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 2.51 kWh/m² to a high of 6.23 kWh/m² in June across the year — September's 5.05 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
Planning a trip in September

Hazard calendar for Natchez

In seasonPeak

In September, Natchez sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Natchez sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Natchez?

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

4.6
Sightseeing
9th-best month of the year
6.9
Beach & pool
3rd-best month of the year

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

What to pack for Natchez in September

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

In September, Natchez sees daytime highs around 88°F and nights near 69°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Natchez 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 Natchez peaks around June 23 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 23UV 10Dec 20UV 3
UV index (midday)Level
Jan4Moderate
Feb5High
Mar7High
Apr10Very high
May9Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Natchez 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 Natchez is worst in July — around 23 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1622 µg/m³Dec 187 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar10Good
Apr10Good
May14Moderate
Jun18Moderate
Jul23Moderate
Aug17Moderate
Sep11Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is Natchez?

Natchez sits at 31.6°N, 91.4°W, 217 ft above sea level, in United States. The nearest listed city is Vicksburg, 63 mi away.

Topography around Natchez

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

Within 2 miles, the terrain around Natchez has only modest variations in elevation — a maximum elevation change of 295 ft around an average of 161 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 463 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 551 ft.

The land around Natchez is covered by trees (55%) within 2 miles, trees (66%) within 10 miles, and trees (72%) within 50 miles.

2 miles
295 ft
10 miles
463 ft
50 miles
551 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Vicksburg 63 mi · Alexandria 64 mi · Zachary 65 mi · Central 73 mi · Monroe 78 mi · Baton Rouge 78 mi · Opelousas 81 mi · Clinton 83 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 Natchez (31.5602°, -91.4033°, elevation 217 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).