Mansfield weather in September

In September, Mansfield sees average daytime highs of 74°F and overnight lows near 55°F, with 3.0 in of rain across 9.4 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 77°F in the first days to 69°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 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 Mansfield's 1st-clearest and 10th-windiest month. For the whole year in context, see Mansfield's year-round climate.

Daytime high
74°
4th warmest
Overnight low
55°
9th coldest
Rainfall
3.0 in
9.4 wet days
Daylight
12 h 18 min
6:16 AM – 6:32 PM
Cloud cover
52%
1st clearest
Wind
7 mph
10th windiest
Solar energy
4.36 kWh/m²
Travel score
6.9
out of 10

Mansfield is city in and county seat of Richland County, Ohio, United States.

Density
585/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 77°F in the first days to 69°F by the end.

A typical September day in Mansfield reaches about 74°F in the afternoon and slips back to 55°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 63°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)
17860
27860
37860
47760
57759
67759
77659
87658
97658
107658
117557
127557
137456
147456
157456
167455
177355
187355
197354
207254
217253
227153
237153
247152
257052
267051
276951
286951
296950
306850

How September really feels in Mansfield

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.

Mansfield weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 21°3.211.47.39.40.0
Feb37° / 23°2.69.65.710.40.0
Mar47° / 31°3.611.73.911.71.4
Apr60° / 41°4.5131.313.14.3
May69° / 51°4.413.8014.25.8
Jun78° / 61°4.212.7014.96.2
Jul81° / 64°3.611.3014.66.3
Aug80° / 63°3.310.3013.66.6
Sep74° / 55°3.09.4012.36.9
Oct62° / 44°3.19.80.210.95.2
Nov49° / 34°3.110.229.71.9
Dec38° / 26°3.210.45.19.10.0

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 45%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65743
75743
85743
95743
105644
115545
125545
135545
145446
155446
165446
175347
185347
195347
205446
215446
225446
235446
245347
255347
265347
275248
285248
295149
305248

Chance of precipitation in September

Any precipitation

Mansfield gets around 3.0 in of rain over 9.4 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 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
231
331
431
531
631
731
830
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1930
2030
2131
2231
2332
2432
2533
2633
2733
2833
2933
3033

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1272424223
2282424213
3302423203
4312522193
5332522182
6352521172
7362520172
8382520162
9402519152
10412519141
11432518131
12442518121
13462517121
14472417111
15492416101
16512415100
1753231590
1854231490
1957221380
2058211380
2161201270
2261201270
2364191160
2466181060
2567171060
266817960
277016950
287115950
297215850
307314850

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 8 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
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297light breeze
308light breeze

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 6:01 AM to 6:31 AM, and sunset from 6:58 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:016:58
212.96:026:57
312.96:036:55
412.86:046:53
512.86:056:52
612.76:066:50
712.76:076:48
812.66:086:46
912.66:096:45
1012.56:106:43
1112.56:116:41
1212.56:126:39
1312.46:136:38
1412.46:146:36
1512.36:156:34
1612.36:166:32
1712.26:176:31
1812.26:186:29
1912.16:196:27
2012.16:206:25
2112.06:216:24
2212.06:236:22
2311.96:246:20
2411.96:256:18
2511.86:266:17
2611.86:276:15
2711.86:286:13
2811.76:296:11
2911.76:306:10
3011.66:316:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.36 kWh/m².

For context, solar energy here swings from a low near 1.52 kWh/m² to a high of 6.17 kWh/m² in June across the year — September's 4.36 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.8Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.2Bright
224.1Bright
234.1Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Mansfield?

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
5.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Mansfield for sightseeing.

What to pack for Mansfield in September

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

In September, Mansfield sees daytime highs around 74°F and nights near 55°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Mansfield 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 Mansfield peaks around June 20 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Mansfield 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 Mansfield is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Oct 247 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar11Good
Apr11Good
May14Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Mansfield?

Mansfield sits at 40.8°N, 82.5°W, 1,243 ft above sea level, in United States. The nearest listed city is Ashland, 13 mi away.

Topography around Mansfield

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

Within 2 miles, the terrain around Mansfield has only modest variations in elevation — a maximum elevation change of 397 ft around an average of 1,266 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 600 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,102 ft.

The land around Mansfield is covered by trees (51%), artificial surfaces (25%) and grassland (22%) within 2 miles, trees (49%), cropland (24%) and grassland (22%) within 10 miles, and cropland (46%) and trees (34%) within 50 miles.

2 miles
397 ft
10 miles
600 ft
50 miles
1,102 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ashland 13 mi · Mount Vernon 25 mi · Wooster 30 mi · Norwalk 34 mi · Marion 34 mi · Tiffin 42 mi · Medina 43 mi · Delaware 43 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 Mansfield (40.7584°, -82.5155°, elevation 1,243 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).