Mooresville weather in September

In September, Mooresville sees average daytime highs of 81°F and overnight lows near 64°F, with 3.7 in of rain across 9.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 85°F in the first days to 77°F by the end. The sky is clear or mostly clear about 39% of the time in September, and the air most often feels muggy.

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 Mooresville's 3rd-clearest and 9th-windiest month. For the whole year in context, see Mooresville's year-round climate.

Daytime high
81°
4th warmest
Overnight low
64°
9th coldest
Rainfall
3.7 in
9.2 wet days
Daylight
12 h 12 min
6:11 AM – 6:24 PM
Cloud cover
54%
3rd clearest
Wind
5 mph
9th windiest
Solar energy
4.57 kWh/m²
Travel score
6.4
out of 10

Mooresville is town in Iredell County, North Carolina, USA.

Density
627/km²
people per km²
Founded
1873

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 85°F in the first days to 77°F by the end.

A typical September day in Mooresville reaches about 81°F in the afternoon and slips back to 64°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 89°F. Set against its neighbours, September runs about 6°F cooler than August and about 10°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18568
28567
38567
48567
58567
68466
78466
88466
98365
108365
118365
128365
138264
148264
158264
168164
178163
188163
198063
208062
218062
227962
237961
247961
257860
267860
277860
287759
297759
307658

How September really feels in Mooresville

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.

Mooresville weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan50° / 33°3.69.61.29.92.5
Feb54° / 36°3.38.71.110.73.4
Mar62° / 42°4.2100.511.75.4
Apr71° / 51°3.58.8012.96.8
May79° / 60°3.010.2013.96.5
Jun86° / 68°3.512.2014.44.6
Jul89° / 71°3.513.4014.23.8
Aug87° / 70°3.411.5013.34.5
Sep81° / 64°3.79.2012.26.4
Oct71° / 52°3.37011.17.2
Nov61° / 41°3.37.50.110.15.5
Dec53° / 36°3.790.59.63.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25446
35446
45446
55545
65545
75545
85545
95545
105644
115644
125545
135644
145545
155545
165446
175347
185446
195347
205248
215248
225248
235248
245347
255347
265446
275446
285545
295545
305545

Chance of precipitation in September

Any precipitation

Mooresville gets around 3.7 in of rain over 9.2 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 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
132
231
331
430
530
629
729
828
928
1028
1128
1228
1328
1428
1529
1629
1730
1830
1931
2032
2132
2232
2332
2431
2531
2630
2729
2829
2928
3028

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1613234118
2613243918
3714243817
4815253617
5915253516
6916263415
71017263215
81117263114
91218263113
101318273012
111418273011
121518262911
131619262910
14171926299
15181926299
16191926288
17192025288
18202025287
19212025277
20222025276
21232025266
22252024255
23262024255
24282024245
25292123234
26312123214
27322122204
28342122194
29362121184
30372121174

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 5 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
255calm
265calm
275calm
285calm
295calm
305calm

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 5:59 AM to 6:22 AM, and sunset from 6:47 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:596:47
212.86:006:45
312.76:016:44
412.76:026:42
512.66:026:41
612.66:036:39
712.66:046:38
812.56:056:36
912.56:056:35
1012.56:066:33
1112.46:076:32
1212.46:086:30
1312.36:096:29
1412.36:096:27
1512.36:106:26
1612.26:116:24
1712.26:126:23
1812.16:126:21
1912.16:136:20
2012.16:146:18
2112.06:156:17
2212.06:166:15
2312.06:166:14
2411.96:176:12
2511.96:186:11
2611.86:196:09
2711.86:206:08
2811.86:206:06
2911.76:216:05
3011.76:226:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.57 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 6.19 kWh/m² in June across the year — September's 4.57 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
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.2Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Mooresville

In seasonPeak

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

Mooresville 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 Mooresville?

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

6.4
Sightseeing
4th-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Mooresville in September

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

In September, Mooresville sees daytime highs around 81°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Mooresville 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 Mooresville peaks around July 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 11UV 9Dec 20UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov4Moderate
Dec2Moderate

Air quality in Mooresville 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 Mooresville is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1718 µg/m³Dec 219 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar12Moderate
Apr12Good
May14Moderate
Jun17Moderate
Jul19Moderate
Aug17Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec9Good
Location & terrain

Where is Mooresville?

Mooresville sits at 35.6°N, 80.8°W, 909 ft above sea level, in United States. The nearest listed city is Cornelius, 7.5 mi away.

Topography around Mooresville

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

Within 2 miles, the terrain around Mooresville has only modest variations in elevation — a maximum elevation change of 187 ft around an average of 873 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 364 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,723 ft.

The land around Mooresville is covered by trees (63%) within 2 miles, trees (58%) and grassland (21%) within 10 miles, and trees (73%) within 50 miles.

2 miles
187 ft
10 miles
364 ft
50 miles
2,723 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Cornelius 7.5 mi · Huntersville 12 mi · Kannapolis 12 mi · Statesville 14 mi · Concord 17 mi · Salisbury 20 mi · Charlotte 25 mi · Mint Hill 29 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 Mooresville (35.5849°, -80.8101°, elevation 909 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).