Muncie weather in September

In September, Muncie sees average daytime highs of 76°F and overnight lows near 56°F, with 2.6 in of rain across 7.9 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 80°F in the first days to 72°F by the end. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Muncie's 1st-clearest and 10th-windiest month. For the whole year in context, see Muncie's year-round climate.

Daytime high
76°
4th warmest
Overnight low
56°
9th coldest
Rainfall
2.6 in
7.9 wet days
Daylight
12 h 18 min
6:28 AM – 6:44 PM
Cloud cover
50%
1st clearest
Wind
7 mph
10th windiest
Solar energy
4.54 kWh/m²
Travel score
7.2
out of 10

Muncie is county seat of Delaware County, Indiana, United States.

Density
988/km²
people per km²
Founded
1827

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 80°F in the first days to 72°F by the end.

A typical September day in Muncie reaches about 76°F in the afternoon and slips back to 56°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 66°F and 86°F. Set against its neighbours, September runs about 5°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18062
28062
38061
48061
57960
67960
77960
87859
97859
107859
117858
127758
137757
147757
157657
167656
177656
187555
197555
207555
217454
227454
237453
247353
257353
267252
277252
287252
297151
307151

How September really feels in Muncie

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.

Muncie 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
Jan35° / 21°3.09.65.29.50.0
Feb38° / 23°2.58.84.610.40.0
Mar49° / 32°3.611.12.711.72.0
Apr62° / 43°4.412.50.6134.8
May71° / 53°4.513.9014.26.0
Jun80° / 63°4.211.9014.86.2
Jul83° / 66°3.411.5014.65.8
Aug81° / 64°3.19.6013.66.6
Sep76° / 56°2.67.9012.37.2
Oct64° / 45°3.18.90.210.95.8
Nov50° / 35°3.28.81.49.82.4
Dec39° / 26°2.9103.89.20.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 42%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55941
65941
75941
85941
95941
105842
115842
125941
135842
145842
155743
165743
175842
185743
195743
205743
215743
225842
235743
245743
255743
265644
275644
285743
295644
305644

Chance of precipitation in September

Any precipitation

Muncie gets around 2.6 in of rain over 7.9 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
226
326
426
526
625
725
825
925
1025
1125
1225
1325
1426
1526
1626
1727
1827
1928
2028
2128
2229
2329
2429
2529
2629
2729
2829
2929
3028

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 14% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1242224247
2252223246
3272222236
4292222225
5312321214
6332320203
7352320193
8372320182
9382319172
10402319162
11422319161
12442218151
13452218141
14472217131
15492117121
16512116120
17532016110
18552015100
1958191490
2058191490
2161181380
2263181270
2365171170
2465171170
2567171060
2668161060
277016950
287115950
297115950
307214950

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.

051015151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light 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 12 h 54 min 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 78 minutes over September. Sunrise moves from 6:13 AM to 6:42 AM, and sunset from 7:09 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:137:09
212.96:147:08
312.86:157:06
412.86:167:04
512.86:177:03
612.76:187:01
712.76:196:59
812.66:206:57
912.66:216:56
1012.56:226:54
1112.56:236:52
1212.46:246:51
1312.46:256:49
1412.46:266:47
1512.36:276:45
1612.36:286:44
1712.26:296:42
1812.26:306:40
1912.16:316:39
2012.16:326:37
2112.06:336:35
2212.06:346:33
2311.96:356:32
2411.96:366:30
2511.96:376:28
2611.86:386:26
2711.86:396:25
2811.76:406:23
2911.76:416:21
3011.66:426:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.54 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.28 kWh/m² in July across the year — September's 4.54 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.7Bright
134.6Bright
144.6Bright
154.6Bright
164.5Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.2Bright
264.1Bright
274.1Bright
284.0Bright
294.0Moderate
303.9Moderate
Planning a trip in September

Is September a good time to visit Muncie?

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

7.2
Sightseeing
1st-best month of the year
6.1
Beach & pool
4th-best month of the year

September is one of the better times to visit Muncie for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Muncie in September

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

In September, Muncie sees daytime highs around 76°F and nights near 56°F. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

UV index in Muncie 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 Muncie 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 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 20UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Muncie 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 Muncie is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1416 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar12Moderate
Apr12Moderate
May14Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Muncie?

Muncie sits at 40.2°N, 85.4°W, 932 ft above sea level, in United States. The nearest listed city is Anderson, 17 mi away.

Topography around Muncie

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

Within 2 miles, the terrain around Muncie has only modest variations in elevation — a maximum elevation change of 82 ft around an average of 955 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 351 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 696 ft.

The land around Muncie is covered by artificial surfaces (38%), trees (36%) and grassland (21%) within 2 miles, cropland (60%) and trees (21%) within 10 miles, and cropland (74%) within 50 miles.

2 miles
82 ft
10 miles
351 ft
50 miles
696 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Anderson 17 mi · New Castle 18 mi · Marion 29 mi · Noblesville 34 mi · Greenfield 35 mi · Richmond 37 mi · Fishers 37 mi · Westfield 40 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 Muncie (40.1934°, -85.3864°, elevation 932 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).