Meridian weather in September

In September, Meridian sees average daytime highs of 87°F and overnight lows near 67°F, with 3.1 in of rain across 8.3 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 89°F in the first days to 83°F by the end. The sky is clear or mostly clear about 44% 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 Meridian's 3rd-clearest and 9th-windiest month. For the whole year in context, see Meridian's year-round climate.

Daytime high
87°
4th warmest
Overnight low
67°
9th coldest
Rainfall
3.1 in
8.3 wet days
Daylight
12 h 12 min
5:43 AM – 5:55 PM
Cloud cover
49%
3rd clearest
Wind
5 mph
9th windiest
Solar energy
4.94 kWh/m²
Travel score
5.1
out of 10

Meridian is city in and the county seat of Lauderdale County, Mississippi, United States.

Density
281/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 89°F in the first days to 83°F by the end.

A typical September day in Meridian reaches about 87°F in the afternoon and slips back to 67°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 93°F. Set against its neighbours, September runs about 4°F cooler than August and about 9°F warmer than October.

50°60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18970
28970
38970
48970
58970
68969
78969
88869
98869
108869
118868
128868
138768
148768
158767
168767
178767
188667
198666
208666
218565
228565
238565
248564
258464
268464
278463
288363
298362
308362

How September really feels in Meridian

Once humidity and wind are folded in, September averages 12 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
12
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.

Meridian 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°4.49.410.14.2
Feb62° / 42°4.59.810.85.2
Mar69° / 48°4.810.111.86.4
Apr76° / 55°4.18.712.87.1
May83° / 63°4.01013.65.9
Jun89° / 70°3.712.114.14.0
Jul91° / 73°4.415.913.93.2
Aug91° / 72°4.112.913.23.5
Sep87° / 67°3.18.312.25.1
Oct77° / 56°3.36.911.27.5
Nov67° / 46°3.67.910.36.6
Dec59° / 40°4.69.89.94.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% 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 38%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25842
35941
45941
56040
66040
76139
86139
96139
106238
116238
126238
136238
146337
156238
166238
176238
186238
196238
206337
216238
226337
236436
246436
256535
266535
276535
286733
296733
306733

Chance of precipitation in September

Any precipitation

Meridian gets around 3.1 in of rain over 8.3 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 28% and peaks near 32% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
132
232
332
431
531
630
730
829
929
1029
1129
1229
1329
1429
1529
1629
1729
1829
1929
2029
2128
2227
2327
2426
2525
2624
2723
2823
2922
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 30% of days. Sticky, muggy-or-worse air turns up on roughly 58% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1251433451
2251433441
3361534421
4361534401
5471634391
6471734371
7481734361
8581834341
9591934331
10691933321
116102033311
126102033310
137112132290
147112131290
158122131280
168122230270
179122230260
1810122230250
1911132229240
2012132229230
2113132229220
2215132229210
2317132228200
2418142228180
2520142127170
2622142126160
2723152126151
2825152125131
2927162124120
3028162023120

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
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 5:34 AM to 5:53 AM, and sunset from 6:15 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:346:15
212.75:346:14
312.65:356:13
412.65:366:11
512.65:366:10
612.55:376:09
712.55:376:07
812.55:386:06
912.45:396:05
1012.45:396:03
1112.45:406:02
1212.35:416:01
1312.35:415:59
1412.35:425:58
1512.25:435:56
1612.25:435:55
1712.25:445:54
1812.15:455:52
1912.15:455:51
2012.15:465:49
2112.05:475:48
2212.05:475:47
2312.05:485:45
2411.95:485:44
2511.95:495:43
2611.95:505:41
2711.85:515:40
2811.85:515:38
2911.85:525:37
3011.75:535:36

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.94 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 6.18 kWh/m² in June across the year — September's 4.94 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Is September a good time to visit Meridian?

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

5.1
Sightseeing
7th-best month of the year
7.1
Beach & pool
1st-best month of the year

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

What to pack for Meridian in September

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

In September, Meridian sees daytime highs around 87°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Meridian 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 Meridian 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 3 (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 3
UV index (midday)Level
Jan4Moderate
Feb5High
Mar6High
Apr9Very high
May9Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep8Very high
Oct5High
Nov5Moderate
Dec3Moderate

Air quality in Meridian 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 Meridian is worst in July — around 21 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (January, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1721 µg/m³Jan 146 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr10Good
May13Moderate
Jun17Moderate
Jul21Moderate
Aug18Moderate
Sep15Moderate
Oct10Good
Nov9Good
Dec7Good
Location & terrain

Where is Meridian?

Meridian sits at 32.4°N, 88.7°W, 344 ft above sea level, in United States. The nearest listed city is Laurel, 53 mi away.

Topography around Meridian

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

Within 2 miles, the terrain around Meridian has only modest variations in elevation — a maximum elevation change of 292 ft around an average of 364 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 413 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 696 ft.

The land around Meridian is covered by trees (58%) and artificial surfaces (26%) within 2 miles, trees (82%) within 10 miles, and trees (89%) within 50 miles.

2 miles
292 ft
10 miles
413 ft
50 miles
696 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Laurel 53 mi · Brandon 75 mi · Starkville 75 mi · Hattiesburg 80 mi · Columbus 80 mi · Madison 83 mi · Ridgeland 83 mi · Pearl 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 Meridian (32.3643°, -88.7037°, elevation 344 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).