Calhoun weather in September

In September, Calhoun sees average daytime highs of 83°F and overnight lows near 64°F, with 3.5 in of rain across 8.1 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 9th-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 41% 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 Calhoun's 3rd-clearest and 9th-windiest month. For the whole year in context, see Calhoun's year-round climate.

Daytime high
83°
4th warmest
Overnight low
64°
9th coldest
Rainfall
3.5 in
8.1 wet days
Daylight
12 h 12 min
6:28 AM – 6:40 PM
Cloud cover
52%
3rd clearest
Wind
5 mph
9th windiest
Solar energy
4.62 kWh/m²
Travel score
6.1
out of 10

Calhoun is city in Gordon County, Georgia, United States.

Density
416/km²
people per km²
Founded
1852

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 Calhoun 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)
18768
28668
38668
48667
58667
68667
78567
88566
98566
108566
118565
128465
138465
148465
158364
168364
178364
188363
198263
208263
218262
228162
238162
248061
258061
268060
277960
287960
297959
307859

How September really feels in Calhoun

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.

Calhoun weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan52° / 34°4.810.50.6102.6
Feb56° / 37°4.610.30.710.73.6
Mar64° / 44°5.011.20.111.75.5
Apr72° / 51°4.39.9012.86.7
May80° / 60°3.510.2013.86.5
Jun86° / 68°3.412.2014.34.6
Jul89° / 71°3.713014.13.9
Aug88° / 70°3.311.2013.34.3
Sep83° / 64°3.58.1012.26.1
Oct73° / 52°3.16.9011.17.4
Nov62° / 42°4.28.2010.25.6
Dec54° / 37°4.910.40.39.73.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% 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 (%)
15644
25644
35743
45743
55842
65842
76040
86040
96040
106040
116040
125941
135941
145941
155842
165743
175743
185743
195644
205545
215644
225644
235743
245743
255743
265842
275842
285941
295941
306040

Chance of precipitation in September

Any precipitation

Calhoun gets around 3.5 in of rain over 8.1 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 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
229
328
428
527
626
725
825
924
1024
1124
1224
1324
1425
1525
1626
1727
1827
1928
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 39% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
129234223
2310244121
3311254120
4412264019
5512273917
6513283816
7614293615
8715293514
9816303412
10916303312
11917313211
121018313110
131119313010
14121931309
15122031299
16132031289
17142031278
18152031268
19162030268
20182030257
21191930247
22211930246
23231929236
24251929225
25271928215
26281928214
27301827204
28321827194
29341826183
30361826173

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
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 6:17 AM to 6:38 AM, and sunset from 7:02 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:177:02
212.76:187:01
312.76:186:59
412.76:196:58
512.66:206:57
612.66:206:55
712.56:216:54
812.56:226:52
912.56:236:51
1012.46:236:49
1112.46:246:48
1212.46:256:46
1312.36:266:45
1412.36:266:43
1512.26:276:42
1612.26:286:40
1712.26:286:39
1812.16:296:38
1912.16:306:36
2012.16:316:35
2112.06:316:33
2212.06:326:32
2312.06:336:30
2411.96:346:29
2511.96:346:27
2611.86:356:26
2711.86:366:24
2811.86:376:23
2911.76:376:21
3011.76:386:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 6.05 kWh/m² in June across the year — September's 4.62 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
94.9Bright
104.8Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.4Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.2Bright
304.2Bright
Planning a trip in September

Is September a good time to visit Calhoun?

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

6.1
Sightseeing
4th-best month of the year
7.1
Beach & pool
1st-best month of the year

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

What to pack for Calhoun in September

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

In September, Calhoun 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 Calhoun 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 Calhoun 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
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Calhoun 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 Calhoun 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 1620 µg/m³Jan 117 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar11Good
Apr12Moderate
May14Moderate
Jun17Moderate
Jul20Moderate
Aug16Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec7Good
Location & terrain

Where is Calhoun?

Calhoun sits at 34.5°N, 85.0°W, 659 ft above sea level, in United States. The nearest listed city is Dalton, 19 mi away.

Topography around Calhoun

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

Within 2 miles, the terrain around Calhoun has only modest variations in elevation — a maximum elevation change of 305 ft around an average of 673 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,270 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,661 ft.

The land around Calhoun is covered by trees (51%) and grassland (28%) within 2 miles, trees (63%) and grassland (29%) within 10 miles, and trees (81%) within 50 miles.

2 miles
305 ft
10 miles
1,270 ft
50 miles
3,661 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Dalton 19 mi · Rome 21 mi · Cartersville 25 mi · Canton 32 mi · Acworth 34 mi · East Brainerd 36 mi · Woodstock 37 mi · Kennesaw 39 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 Calhoun (34.5026°, -84.951°, elevation 659 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).