Athens weather in September

In September, Athens sees average daytime highs of 78°F and overnight lows near 58°F, with 3.5 in of rain across 8.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 82°F in the first days to 73°F by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Athens's 1st-clearest and 10th-windiest month. For the whole year in context, see Athens's year-round climate.

Daytime high
78°
4th warmest
Overnight low
58°
9th coldest
Rainfall
3.5 in
8.5 wet days
Daylight
12 h 18 min
6:15 AM – 6:30 PM
Cloud cover
52%
1st clearest
Wind
5 mph
10th windiest
Solar energy
4.44 kWh/m²
Travel score
7.0
out of 10

Athens is city in Athens County, Ohio, United States.

Density
963/km²
people per km²
Founded
1797

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 82°F in the first days to 73°F by the end.

A typical September day in Athens reaches about 78°F in the afternoon and slips back to 58°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 87°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18263
28263
38263
48162
58162
68162
78161
88061
98061
108060
117960
127960
137959
147859
157858
167858
177758
187757
197757
207657
217656
227556
237555
247555
257455
267454
277454
287354
297353
307353

How September really feels in Athens

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.

Athens weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 26°3.610.94.39.50.0
Feb43° / 28°3.510.24.110.50.5
Mar53° / 35°4.512.42.211.72.8
Apr65° / 46°4.412.50.3135.4
May73° / 55°4.713.7014.16.1
Jun81° / 63°4.512.5014.75.9
Jul85° / 67°4.113.1014.55.0
Aug84° / 65°3.510.5013.55.6
Sep78° / 58°3.58.5012.37.0
Oct66° / 47°3.19.20.1116.1
Nov53° / 37°3.39.20.79.83.2
Dec44° / 30°3.610.42.59.30.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25941
35941
45941
55941
65941
75842
85842
95743
105743
115743
125545
135545
145545
155446
165446
175446
185446
195347
205347
215347
225347
235446
245446
255446
265545
275545
285545
295644
305644

Chance of precipitation in September

Any precipitation

Athens gets around 3.5 in of rain over 8.5 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
329
429
528
628
727
826
926
1025
1125
1225
1325
1425
1526
1626
1727
1827
1928
2028
2129
2230
2330
2430
2530
2630
2730
2829
2929
3028

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11521242712
21622242712
31722242611
41823242510
5192324249
6202424238
7222425227
8232525216
9252525206
10262525195
11282525184
12292525173
13312525163
14322525163
15342524152
16362524142
17382423132
18392423121
19412422111
20432322111
21462321101
2248222091
2350221990
2453211880
2554211870
2656201770
2758191760
2859191660
2961181650
3063171550

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 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 6:01 AM to 6:29 AM, and sunset from 6:55 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:016:55
212.96:026:54
312.86:036:52
412.86:046:50
512.76:056:49
612.76:066:47
712.66:076:45
812.66:086:44
912.66:096:42
1012.56:096:40
1112.56:106:39
1212.46:116:37
1312.46:126:35
1412.36:136:34
1512.36:146:32
1612.36:156:30
1712.26:166:29
1812.26:176:27
1912.16:186:25
2012.16:196:24
2112.06:206:22
2212.06:216:20
2311.96:226:18
2411.96:236:17
2511.96:246:15
2611.86:256:13
2711.86:266:12
2811.76:276:10
2911.76:286:08
3011.66:296:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m².

For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 6.13 kWh/m² in June across the year — September's 4.44 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.0Bright
264.0Bright
274.0Moderate
284.0Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Is September a good time to visit Athens?

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

7.0
Sightseeing
1st-best month of the year
6.4
Beach & pool
3rd-best month of the year

September is one of the better times to visit Athens for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Athens in September

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

In September, Athens sees daytime highs around 78°F and nights near 58°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Athens in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Athens peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 19UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Athens 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 Athens is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1318 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May14Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is Athens?

Athens sits at 39.3°N, 82.1°W, 719 ft above sea level, in United States. The nearest listed city is Parkersburg, 29 mi away.

Topography around Athens

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

Within 2 miles, the terrain around Athens has only modest variations in elevation — a maximum elevation change of 430 ft around an average of 778 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 499 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 778 ft.

The land around Athens is covered by trees (70%) within 2 miles, trees (81%) within 10 miles, and trees (77%) within 50 miles.

2 miles
430 ft
10 miles
499 ft
50 miles
778 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Parkersburg 29 mi · Lancaster 37 mi · Zanesville 42 mi · Chillicothe 47 mi · Pickerington 52 mi · Newark 53 mi · Pataskala 55 mi · Reynoldsburg 57 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 Athens (39.3292°, -82.1013°, elevation 719 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).