Rome weather in September

In September, Rome sees average daytime highs of 83°F and overnight lows near 64°F, with 3.5 in of rain across 8.2 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 86°F in the first days to 79°F by the end. The sky is clear or mostly clear about 40% 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 Rome's 3rd-clearest and 9th-windiest month. For the whole year in context, see Rome's year-round climate.

Daytime high
83°
4th warmest
Overnight low
64°
9th coldest
Rainfall
3.5 in
8.2 wet days
Daylight
12 h 12 min
6:29 AM – 6:41 PM
Cloud cover
52%
3rd clearest
Wind
5 mph
9th windiest
Solar energy
4.65 kWh/m²
Travel score
6.2
out of 10

Rome is county seat of Floyd County, Georgia, United States.

Density
443/km²
people per km²
Founded
1834

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 86°F in the first days to 79°F by the end.

A typical September day in Rome reaches about 83°F in the afternoon and slips back to 64°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 91°F. Set against its neighbours, September runs about 5°F cooler than August and about 10°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18668
28668
38668
48667
58567
68567
78567
88566
98566
108566
118465
128465
138465
148365
158364
168364
178364
188263
198263
208263
218162
228162
238162
248061
258061
268060
277960
287960
297959
307859

How September really feels in Rome

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.

Rome 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
Jan52° / 35°4.910.50.6102.7
Feb56° / 38°4.710.50.610.73.7
Mar64° / 44°5.110.70.111.75.6
Apr72° / 52°4.210.2012.86.7
May80° / 60°3.610.6013.86.4
Jun86° / 68°3.713.6014.24.6
Jul89° / 71°4.214.2014.13.9
Aug88° / 70°3.412.1013.34.3
Sep83° / 64°3.58.2012.26.2
Oct73° / 53°3.16.9011.17.4
Nov62° / 42°4.18.30.110.25.7
Dec54° / 37°5.110.80.39.83.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35644
45644
55743
65743
75941
85941
95941
105941
116040
126040
135941
145941
155941
165941
175842
185743
195743
205743
215743
225842
235842
245842
255842
266040
276040
286040
296040
306139

Chance of precipitation in September

Any precipitation

Rome gets around 3.5 in of rain over 8.2 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 27% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
131
230
329
428
528
627
726
826
925
1025
1125
1225
1325
1426
1526
1627
1728
1828
1929
2029
2129
2229
2329
2428
2528
2627
2727
2826
2925
3025

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 41% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
139214324
239234223
3410244122
4410254021
5511263920
6611273818
7612283617
8713293516
9814293415
10915303314
11916303113
121016303013
131117302912
141218302812
151218312711
161319312711
171419312611
181519312510
191619302410
20181930249
21191930239
22211929238
23231929228
24251829217
25271828216
26291828205
27311827205
28321827194
29341726194
30361726183

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
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 6:18 AM to 6:39 AM, and sunset from 7:03 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:187:03
212.76:197:01
312.76:197:00
412.66:206:59
512.66:216:57
612.66:216:56
712.56:226:54
812.56:236:53
912.56:246:52
1012.46:246:50
1112.46:256:49
1212.46:266:47
1312.36:276:46
1412.36:276:44
1512.26:286:43
1612.26:296:41
1712.26:296:40
1812.16:306:38
1912.16:316:37
2012.16:326:35
2112.06:326:34
2212.06:336:32
2312.06:346:31
2411.96:356:30
2511.96:356:28
2611.86:366:27
2711.86:376:25
2811.86:386:24
2911.76:386:22
3011.76:396:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.65 kWh/m².

For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 6.05 kWh/m² in June across the year — September's 4.65 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.8Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.2Bright
Planning a trip in September

Is September a good time to visit Rome?

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

6.2
Sightseeing
4th-best month of the year
7.1
Beach & pool
1st-best month of the year

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

What to pack for Rome in September

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

In September, Rome sees daytime highs around 83°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Rome 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 Rome peaks around July 11 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 11UV 10Dec 19UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Rome 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 Rome is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (January, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1619 µg/m³Jan 107 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar11Good
Apr11Good
May14Moderate
Jun16Moderate
Jul20Moderate
Aug16Moderate
Sep12Moderate
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Rome?

Rome sits at 34.3°N, 85.2°W, 614 ft above sea level, in United States. The nearest listed city is Calhoun, 21 mi away.

Topography around Rome

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

Within 2 miles, the terrain around Rome has only modest variations in elevation — a maximum elevation change of 354 ft around an average of 646 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,132 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,795 ft.

The land around Rome is covered by trees (60%) within 2 miles, trees (75%) within 10 miles, and trees (78%) within 50 miles.

2 miles
354 ft
10 miles
1,132 ft
50 miles
2,795 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Calhoun 21 mi · Cartersville 22 mi · Acworth 31 mi · Kennesaw 35 mi · Dalton 37 mi · Woodstock 39 mi · Canton 39 mi · Marietta 41 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 Rome (34.257°, -85.1647°, elevation 614 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).