Ashtabula weather in September

In September, Ashtabula sees average daytime highs of 71°F and overnight lows near 56°F, with 3.8 in of rain across 10.9 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 75°F in the first days to 67°F by the end. The sky is clear or mostly clear about 36% 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 Ashtabula's 3rd-clearest and 9th-windiest month. For the whole year in context, see Ashtabula's year-round climate.

Daytime high
71°
4th warmest
Overnight low
56°
9th coldest
Rainfall
3.8 in
10.9 wet days
Daylight
12 h 18 min
6:09 AM – 6:26 PM
Cloud cover
54%
3rd clearest
Wind
7 mph
9th windiest
Solar energy
4.23 kWh/m²
Travel score
6.5
out of 10

Ashtabula is city in Ashtabula County, Ohio, USA.

Density
897/km²
people per km²
Founded
1803

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 75°F in the first days to 67°F by the end.

A typical September day in Ashtabula reaches about 71°F in the afternoon and slips back to 56°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 81°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
17661
27661
37560
47560
57560
67460
77459
87459
97458
107358
117358
127358
137257
147257
157256
167156
177156
187155
197055
207055
217054
226954
236953
246953
256853
266852
276752
286752
296751
306651

How September really feels in Ashtabula

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.

Ashtabula 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
Jan33° / 21°3.514.312.29.30.0
Feb35° / 22°2.711.28.210.30.0
Mar44° / 29°3.512.15.711.70.7
Apr56° / 40°4.414.1213.13.4
May67° / 51°4.313.8014.35.5
Jun76° / 60°5.113.70156.3
Jul79° / 65°4.613.3014.76.3
Aug77° / 63°4.412.7013.76.5
Sep71° / 56°3.810.9012.36.5
Oct60° / 46°3.8130.210.94.5
Nov48° / 36°3.613.149.61.6
Dec38° / 28°3.614.59.790.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25941
35941
45941
55941
65941
75743
85743
95743
105644
115545
125545
135446
145446
155446
165347
175347
185347
195347
205347
215347
225347
235248
245248
255248
265149
275149
285050
295149
305149

Chance of precipitation in September

Any precipitation

Ashtabula gets around 3.8 in of rain over 10.9 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 36% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
337
437
537
637
737
837
937
1037
1136
1236
1336
1435
1535
1635
1734
1834
1934
2034
2135
2235
2336
2436
2537
2638
2739
2839
2940
3040

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 44% 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 (%)
1202825234
2212924224
3222923214
4243023204
5253022194
6273021183
7283021173
8303021163
9323021162
10332921152
11352920142
12372820132
13392720121
14412720121
15432619111
16452519101
17472418101
1849241890
1952231780
2054221680
2155221670
2258211560
2359211460
2461201360
2562201350
2663201250
2766191140
2866191140
2968181040
3068181040

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light 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 5:53 AM to 6:24 AM, and sunset from 6:53 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:536:53
212.95:546:51
312.95:556:49
412.85:566:47
512.85:576:46
612.85:596:44
712.76:006:42
812.76:016:40
912.66:026:38
1012.66:036:37
1112.56:046:35
1212.56:056:33
1312.46:066:31
1412.46:076:29
1512.36:086:28
1612.36:096:26
1712.26:106:24
1812.26:116:22
1912.16:126:20
2012.16:136:19
2112.06:156:17
2212.06:166:15
2311.96:176:13
2411.96:186:11
2511.86:196:09
2611.86:206:08
2711.76:216:06
2811.76:226:04
2911.76:236:02
3011.66:246:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.23 kWh/m².

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 6.29 kWh/m² in June across the year — September's 4.23 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.6Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Ashtabula?

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

6.5
Sightseeing
1st-best month of the year
4.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Ashtabula for sightseeing.

What to pack for Ashtabula in September

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

In September, Ashtabula sees daytime highs around 71°F and nights near 56°F. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Ashtabula in September

The nearest coast averages about 70°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 74°F and coldest in February near 33°F.

It's comfortable for a long swim from Jul 2 to Sep 22 — about 2.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan36Bracing
Feb33Bracing
Mar34Bracing
Apr40Bracing
May50Bracing
Jun63Cool
Jul73Refreshing
Aug74Refreshing
Sep70Refreshing
Oct61Cool
Nov51Bracing
Dec42Bracing

UV index in Ashtabula 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 Ashtabula peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (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 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Ashtabula?

Ashtabula sits at 41.9°N, 80.8°W, 673 ft above sea level, in United States. The nearest listed city is Painesville, 25 mi away.

Topography around Ashtabula

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

Within 2 miles, the terrain around Ashtabula has only modest variations in elevation — a maximum elevation change of 325 ft around an average of 699 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 502 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,181 ft.

The land around Ashtabula is covered by trees (58%), grassland (20%) and artificial surfaces (20%) within 2 miles, trees (42%) and water (34%) within 10 miles, and water (48%) and trees (36%) within 50 miles.

2 miles
325 ft
10 miles
502 ft
50 miles
1,181 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Painesville 25 mi · Mentor 32 mi · Willoughby 35 mi · Eastlake 37 mi · Erie 40 mi · Mayfield Heights 42 mi · Euclid 42 mi · Warren 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 Ashtabula (41.865°, -80.7898°, elevation 673 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).