Wooster weather in September

In September, Wooster sees average daytime highs of 74°F and overnight lows near 56°F, with 3.2 in of rain across 9.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 70°F by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Wooster's 1st-clearest and 10th-windiest month. For the whole year in context, see Wooster's year-round climate.

Daytime high
74°
4th warmest
Overnight low
56°
9th coldest
Rainfall
3.2 in
9.5 wet days
Daylight
12 h 18 min
6:14 AM – 6:30 PM
Cloud cover
53%
1st clearest
Wind
6 mph
10th windiest
Solar energy
4.32 kWh/m²
Travel score
6.9
out of 10

Wooster is city in Ohio, United States.

Density
631/km²
people per km²
Founded
1808

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 78°F in the first days to 70°F by the end.

A typical September day in Wooster reaches about 74°F in the afternoon and slips back to 56°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 84°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)
17961
27861
37860
47860
57860
67759
77759
87759
97658
107658
117658
127557
137557
147556
157456
167456
177455
187355
197355
207354
217254
227253
237253
247153
257152
267052
277052
287051
296951
306951

How September really feels in Wooster

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.

Wooster weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 21°3.110.96.99.40.0
Feb38° / 23°2.59.45.310.40.0
Mar48° / 31°3.511.73.711.71.6
Apr61° / 42°4.313.21.313.14.5
May70° / 52°4.013.3014.25.9
Jun79° / 61°3.912014.96.3
Jul82° / 65°3.311.3014.66.2
Aug80° / 63°3.110.4013.66.5
Sep74° / 56°3.29.5012.36.9
Oct62° / 45°3.1100.110.95.3
Nov49° / 35°3.09.91.99.72.1
Dec39° / 27°3.110.14.69.10.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% 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 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65743
75743
85644
95644
105545
115446
125446
135347
145347
155347
165248
175248
185248
195248
205248
215347
225248
235248
245347
255347
265248
275347
285248
295347
305248

Chance of precipitation in September

Any precipitation

Wooster gets around 3.2 in of rain over 9.5 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 31% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
131
231
331
431
531
631
731
831
931
1031
1131
1231
1331
1431
1531
1631
1731
1831
1931
2031
2131
2231
2331
2432
2532
2632
2732
2832
2932
3032

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1262523223
2272523223
3282523213
4302522203
5322521193
6332621182
7352620172
8362620162
9382620152
10392619141
11412519141
12422518131
13442518121
14462517111
15472417111
16492416101
17512316100
1854221590
1955211590
2057211480
2159201470
2261191370
2362181370
2465171260
2566171160
2667161160
2769151150
2870151050
2971141050
3071141050

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 5:59 AM to 6:29 AM, and sunset from 6:56 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:596:56
212.96:006:54
312.96:016:53
412.86:026:51
512.86:036:49
612.76:046:48
712.76:056:46
812.66:066:44
912.66:076:42
1012.56:086:41
1112.56:096:39
1212.56:106:37
1312.46:116:35
1412.46:126:34
1512.36:136:32
1612.36:146:30
1712.26:156:28
1812.26:166:27
1912.16:176:25
2012.16:186:23
2112.06:196:21
2212.06:206:20
2311.96:216:18
2411.96:226:16
2511.86:236:14
2611.86:246:13
2711.86:256:11
2811.76:266:09
2911.76:276:07
3011.66:296:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.32 kWh/m².

For context, solar energy here swings from a low near 1.5 kWh/m² to a high of 6.11 kWh/m² in June across the year — September's 4.32 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.1Bright
224.1Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Wooster?

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

6.9
Sightseeing
1st-best month of the year
5.4
Beach & pool
4th-best month of the year

September is a reasonable time to visit Wooster for sightseeing.

What to pack for Wooster in September

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

In September, Wooster sees daytime highs around 74°F and nights near 56°F. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

UV index in Wooster 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 Wooster peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Wooster 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 Wooster is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Nov 127 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar11Good
Apr11Good
May14Moderate
Jun16Moderate
Jul16Moderate
Aug15Moderate
Sep11Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Wooster?

Wooster sits at 40.8°N, 81.9°W, 997 ft above sea level, in United States. The nearest listed city is Wadsworth, 19 mi away.

Topography around Wooster

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

Within 2 miles, the terrain around Wooster has only modest variations in elevation — a maximum elevation change of 358 ft around an average of 984 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 476 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 971 ft.

The land around Wooster is covered by trees (48%), grassland (24%) and artificial surfaces (20%) within 2 miles, cropland (42%), trees (28%) and grassland (27%) within 10 miles, and trees (50%), cropland (25%) and grassland (20%) within 50 miles.

2 miles
358 ft
10 miles
476 ft
50 miles
971 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Wadsworth 19 mi · Ashland 21 mi · Massillon 22 mi · Barberton 22 mi · Medina 24 mi · Green 25 mi · North Canton 29 mi · Akron 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 Wooster (40.8052°, -81.9365°, elevation 997 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).