Adrian weather in September

In September, Adrian sees average daytime highs of 73°F and overnight lows near 54°F, with 2.5 in of rain across 8.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 9th-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 Adrian's 1st-clearest and 9th-windiest month. For the whole year in context, see Adrian's year-round climate.

Daytime high
73°
4th warmest
Overnight low
54°
9th coldest
Rainfall
2.5 in
8.3 wet days
Daylight
12 h 18 min
6:22 AM – 6:39 PM
Cloud cover
54%
1st clearest
Wind
7 mph
9th windiest
Solar energy
4.33 kWh/m²
Travel score
7.0
out of 10

Adrian is city in Michigan, United States.

Density
998/km²
people per km²
Founded
1826

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 Adrian reaches about 73°F in the afternoon and slips back to 54°F overnight — a 19°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)
17859
27859
37859
47758
57758
67758
77657
87657
97657
107556
117556
127556
137455
147455
157454
167354
177353
187353
197253
207252
217152
227151
237151
247051
257050
266950
276950
286949
296849
306848

How September really feels in Adrian

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.

Adrian 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
Jan32° / 19°2.59.969.30.0
Feb35° / 20°2.18.45.410.30.0
Mar45° / 28°2.69.73.511.71.1
Apr58° / 39°3.711.71.113.14.0
May69° / 50°3.912.6014.35.9
Jun78° / 60°3.610.90156.5
Jul82° / 64°3.411014.76.3
Aug80° / 62°3.210.2013.76.6
Sep73° / 54°2.58.3012.37.0
Oct61° / 43°2.79.30.210.95.1
Nov47° / 33°2.78.91.89.61.6
Dec36° / 25°2.38.64.490.0

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 16% of September, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65743
75743
85644
95644
105644
115446
125446
135446
145347
155248
165248
175248
185149
195149
205149
215149
225149
235149
245050
255050
264951
274951
285050
295050
305149

Chance of precipitation in September

Any precipitation

Adrian gets around 2.5 in of rain over 8.3 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 29% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
128
228
328
428
528
628
728
828
928
1028
1128
1228
1328
1428
1528
1627
1727
1827
1927
2027
2127
2227
2328
2428
2528
2629
2729
2829
2929
3029

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 54% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1292522213
2312522202
3332521192
4352521172
5362620162
6382620151
7402619141
8422519131
9432518121
10452518111
11472518101
12482417101
1350241791
1451231691
1554221680
1655221580
1757211570
1859201470
1962191360
2062191360
2164181260
2267171150
2368171050
2470161040
257215940
267215940
277414840
287514830
297713730
307713730

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 6:06 AM to 6:37 AM, and sunset from 7:06 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:067:06
212.96:077:04
312.96:087:02
412.86:097:00
512.86:106:59
612.86:116:57
712.76:136:55
812.76:146:53
912.66:156:51
1012.66:166:50
1112.56:176:48
1212.56:186:46
1312.46:196:44
1412.46:206:42
1512.36:216:41
1612.36:226:39
1712.26:236:37
1812.26:246:35
1912.16:256:33
2012.16:266:32
2112.06:286:30
2212.06:296:28
2311.96:306:26
2411.96:316:24
2511.86:326:22
2611.86:336:21
2711.76:346:19
2811.76:356:17
2911.76:366:15
3011.66:376:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.33 kWh/m².

For context, solar energy here swings from a low near 1.5 kWh/m² to a high of 6.29 kWh/m² in June across the year — September's 4.33 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.6Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.1Bright
214.1Bright
224.1Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Adrian?

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

September is one of the better times to visit Adrian for general sightseeing.

What to pack for Adrian in September

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

In September, Adrian sees daytime highs around 73°F and nights near 54°F. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

Sea temperature near Adrian 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 at the nearest coast (about 34 mi away) is warmest in August at about 75°F and coldest in February near 33°F.

It's comfortable for a long swim from Jun 20 to Sep 20 — about 3.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan34Bracing
Feb33Bracing
Mar36Bracing
Apr44Bracing
May56Bracing
Jun67Cool
Jul75Refreshing
Aug75Warm
Sep70Refreshing
Oct58Bracing
Nov46Bracing
Dec38Bracing

UV index in Adrian 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 Adrian peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 20UV 9Dec 19UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Adrian 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 Adrian is worst in July — around 16 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1116 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar14Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul16Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov9Good
Dec9Good
Location & terrain

Where is Adrian?

Adrian sits at 41.9°N, 84.0°W, 787 ft above sea level, in United States. The nearest listed city is Sylvania, 21 mi away.

Topography around Adrian

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

Within 2 miles, the terrain around Adrian has only modest variations in elevation — a maximum elevation change of 144 ft around an average of 794 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 420 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 942 ft.

The land around Adrian is covered by trees (41%), grassland (26%) and artificial surfaces (24%) within 2 miles, cropland (57%) and trees (24%) within 10 miles, and cropland (48%) and trees (31%) within 50 miles.

2 miles
144 ft
10 miles
420 ft
50 miles
942 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Sylvania 21 mi · Toledo 30 mi · Ann Arbor 30 mi · Jackson 30 mi · Perrysburg 32 mi · Ypsilanti 32 mi · Monroe 33 mi · Oregon 34 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 Adrian (41.8976°, -84.0372°, elevation 787 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. 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).