Fort Wayne weather in September

In September, Fort Wayne sees average daytime highs of 74°F and overnight lows near 55°F, with 2.6 in of rain across 8.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 69°F by the end. The sky is clear or mostly clear about 39% 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 Fort Wayne's 1st-clearest and 10th-windiest month. For the whole year in context, see Fort Wayne's year-round climate.

Daytime high
74°
4th warmest
Overnight low
55°
9th coldest
Rainfall
2.6 in
8.5 wet days
Daylight
12 h 18 min
6:27 AM – 6:43 PM
Cloud cover
53%
1st clearest
Wind
7 mph
10th windiest
Solar energy
4.44 kWh/m²
Travel score
7.1
out of 10

Fort Wayne is city in and county seat of Allen County, Indiana, United States.

Density
907/km²
people per km²
Founded
1794

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 69°F by the end.

A typical September day in Fort Wayne reaches about 74°F in the afternoon and slips back to 55°F overnight — a 19°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)
17960
27860
37860
47860
57859
67759
77758
87758
97658
107657
117657
127557
137556
147556
157455
167455
177455
187354
197354
207353
217253
227253
237152
247152
257151
267051
277051
286950
296950
306950

How September really feels in Fort Wayne

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.

Fort Wayne weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan33° / 20°2.710.16.29.40.0
Feb36° / 22°2.38.34.910.40.0
Mar47° / 30°3.210.83.311.71.4
Apr59° / 41°4.012.40.813.14.3
May70° / 52°4.013.2014.35.9
Jun79° / 61°4.212.1014.96.2
Jul82° / 65°3.611.2014.76.1
Aug80° / 63°3.510.1013.66.6
Sep74° / 55°2.68.5012.37.1
Oct62° / 44°2.99.40.110.95.3
Nov48° / 34°3.09.41.99.71.9
Dec37° / 25°2.59.74.69.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% 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 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55842
65842
75842
85743
95743
105743
115644
125644
135644
145545
155545
165446
175347
185347
195347
205347
215248
225248
235248
245248
255149
265050
275050
285050
295050
305050

Chance of precipitation in September

Any precipitation

Fort Wayne gets around 2.6 in of rain over 8.5 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
329
429
529
629
728
828
928
1027
1127
1227
1327
1427
1527
1627
1727
1827
1927
2028
2128
2228
2329
2429
2529
2630
2730
2830
2930
3030

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 52% 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 (%)
1262423235
2272422225
3292422214
4312422194
5332421183
6352421173
7362421163
8382421152
9402321142
10422320132
11442220122
12462120121
13472120111
14492019101
15502019101
1653191891
1756181790
1857181780
1959171680
2062161570
2163161470
2266151360
2366151360
2469141250
2570141150
2670141150
2772131050
2873131040
2973131040
307512940

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 6:11 AM to 6:41 AM, and sunset from 7:09 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:117:09
212.96:127:07
312.96:137:06
412.86:147:04
512.86:157:02
612.76:167:01
712.76:176:59
812.66:196:57
912.66:206:55
1012.66:216:54
1112.56:226:52
1212.56:236:50
1312.46:246:48
1412.46:256:46
1512.36:266:45
1612.36:276:43
1712.26:286:41
1812.26:296:39
1912.16:306:38
2012.16:316:36
2112.06:326:34
2212.06:336:32
2311.96:346:30
2411.96:356:29
2511.86:366:27
2611.86:376:25
2711.86:386:23
2811.76:396:22
2911.76:406:20
3011.66:416:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m².

For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 6.28 kWh/m² in June across the year — September's 4.44 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.0Bright
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Fort Wayne?

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

7.1
Sightseeing
1st-best month of the year
5.5
Beach & pool
4th-best month of the year

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

What to pack for Fort Wayne in September

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

In September, Fort Wayne 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 Fort Wayne 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 Fort Wayne peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 19UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec1Low

Air quality in Fort Wayne 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 Fort Wayne is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1716 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar13Moderate
Apr12Moderate
May14Moderate
Jun15Moderate
Jul16Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Fort Wayne?

Fort Wayne sits at 41.1°N, 85.1°W, 810 ft above sea level, in United States. The nearest listed city is New Haven, 7.5 mi away.

Topography around Fort Wayne

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

Within 2 miles, the terrain around Fort Wayne has only modest variations in elevation — a maximum elevation change of 154 ft around an average of 804 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 394 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 643 ft.

The land around Fort Wayne is covered by artificial surfaces (42%), trees (32%) and grassland (22%) within 2 miles, trees (32%), cropland (29%) and grassland (23%) within 10 miles, and cropland (70%) within 50 miles.

2 miles
154 ft
10 miles
394 ft
50 miles
643 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: New Haven 7.5 mi · Huntington 25 mi · Defiance 42 mi · Goshen 48 mi · Marion 48 mi · Elkhart 58 mi · Lima 60 mi · Mishawaka 65 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 Fort Wayne (41.1306°, -85.1289°, elevation 810 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).