Jackson weather in September

In September, Jackson sees average daytime highs of 87°F and overnight lows near 67°F, with 3.3 in of rain across 7.3 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 90°F in the first days to 84°F by the end. The sky is clear or mostly clear about 47% 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 Jackson's 2nd-clearest and 9th-windiest month. For the whole year in context, see Jackson's year-round climate.

Daytime high
87°
4th warmest
Overnight low
67°
9th coldest
Rainfall
3.3 in
7.3 wet days
Daylight
12 h 12 min
5:49 AM – 6:01 PM
Cloud cover
47%
2nd clearest
Wind
5 mph
9th windiest
Solar energy
4.99 kWh/m²
Travel score
5.0
out of 10

Jackson is capital city of the U.S. state of Mississippi and seat of Hinds County, also located in Madison and Rankin counties.

Density
524/km²
people per km²
Founded
1822

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 90°F in the first days to 84°F by the end.

A typical September day in Jackson reaches about 87°F in the afternoon and slips back to 67°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 94°F. Set against its neighbours, September runs about 4°F cooler than August and about 10°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
19070
29070
39070
49070
58970
68969
78969
88969
98969
108968
118968
128868
138868
148867
158867
168867
178767
188766
198766
208766
218665
228665
238665
248564
258564
268563
278463
288462
298462
308362

How September really feels in Jackson

Once humidity and wind are folded in, September averages 13 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
13
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.

Jackson 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
Jan57° / 38°4.89.710.14.0
Feb61° / 41°4.79.710.85.0
Mar68° / 48°4.810.411.86.3
Apr76° / 55°4.58.612.87.1
May83° / 63°4.19.813.66.0
Jun89° / 70°3.411.414.14.1
Jul91° / 73°4.013.813.93.4
Aug91° / 72°3.711.613.23.5
Sep87° / 67°3.37.312.25.0
Oct78° / 55°3.67.511.27.4
Nov67° / 45°3.67.810.36.6
Dec59° / 40°4.79.49.94.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% 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 (%)
15941
26040
36040
46040
56139
66139
76238
86238
96238
106238
116337
126337
136238
146238
156238
166238
176139
186238
196238
206238
216337
226436
236535
246535
256634
266634
276733
286733
296832
306832

Chance of precipitation in September

Any precipitation

Jackson gets around 3.3 in of rain over 7.3 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 25% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
131
230
330
429
529
628
727
827
926
1026
1125
1225
1325
1425
1526
1626
1726
1826
1926
2025
2125
2224
2324
2423
2523
2622
2722
2821
2921
3021

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 55% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1261632413
2361732402
3371732382
4471832372
5471832362
6581932352
7681932332
8691932321
9791932311
108102032301
118102031291
129112031291
1310112030281
1410122030270
1511122030270
1611132029260
1712132129250
1813132129240
1914142128230
2015142128220
2116142128210
2218142127190
2319152127180
2421152127170
2523152126150
2624152126140
2726152125130
2827162124120
2929162124110
3030162123100

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 5:40 AM to 5:58 AM, and sunset from 6:21 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:406:21
212.75:406:20
312.65:416:19
412.65:416:17
512.65:426:16
612.55:436:15
712.55:436:13
812.55:446:12
912.45:456:11
1012.45:456:09
1112.45:466:08
1212.35:476:06
1312.35:476:05
1412.35:486:04
1512.25:496:02
1612.25:496:01
1712.25:506:00
1812.15:505:58
1912.15:515:57
2012.15:525:55
2112.05:525:54
2212.05:535:53
2312.05:545:51
2411.95:545:50
2511.95:555:48
2611.95:565:47
2711.85:565:46
2811.85:575:44
2911.85:585:43
3011.75:585:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.99 kWh/m².

For context, solar energy here swings from a low near 2.46 kWh/m² to a high of 6.27 kWh/m² in June across the year — September's 4.99 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Is September a good time to visit Jackson?

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 Jackson for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Jackson in September

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

In September, Jackson sees daytime highs around 87°F and nights near 67°F. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Jackson in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jackson peaks around July 12 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 highHighModerateJul 12UV 10Dec 20UV 3
UV index (midday)Level
Jan4Moderate
Feb5High
Mar6High
Apr9Very high
May9Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct5High
Nov5Moderate
Dec3Moderate

Air quality in Jackson 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 Jackson is worst in July — around 22 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (January, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1622 µg/m³Jan 106 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr10Good
May13Moderate
Jun18Moderate
Jul22Moderate
Aug17Moderate
Sep12Moderate
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Jackson?

Jackson sits at 32.3°N, 90.2°W, 279 ft above sea level, in United States. The nearest listed city is Pearl, 3.7 mi away.

Topography around Jackson

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

Within 2 miles, the terrain around Jackson has only modest variations in elevation — a maximum elevation change of 184 ft around an average of 299 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 305 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 614 ft.

The land around Jackson is covered by trees (47%) and artificial surfaces (33%) within 2 miles, trees (73%) within 10 miles, and trees (82%) within 50 miles.

2 miles
184 ft
10 miles
305 ft
50 miles
614 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Pearl 3.7 mi · Clinton 8.7 mi · Ridgeland 9.3 mi · Brandon 12 mi · Madison 12 mi · Vicksburg 40 mi · Laurel 75 mi · Greenwood 84 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 Jackson (32.2988°, -90.1848°, elevation 279 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).