Kirksville weather in September

In September, Kirksville sees average daytime highs of 76°F and overnight lows near 56°F, with 3.3 in of rain across 7.9 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 81°F in the first days to 72°F by the end. The sky is clear or mostly clear about 49% 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 Kirksville's 1st-clearest and 10th-windiest month. For the whole year in context, see Kirksville's year-round climate.

Daytime high
76°
4th warmest
Overnight low
56°
9th coldest
Rainfall
3.3 in
7.9 wet days
Daylight
12 h 18 min
5:57 AM – 6:12 PM
Cloud cover
45%
1st clearest
Wind
7 mph
10th windiest
Solar energy
4.77 kWh/m²
Travel score
7.3
out of 10

Kirksville is city in and county seat of Adair County, Missouri, United States.

Density
469/km²
people per km²
Founded
1841

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 81°F in the first days to 72°F by the end.

A typical September day in Kirksville reaches about 76°F in the afternoon and slips back to 56°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 87°F. Set against its neighbours, September runs about 7°F cooler than August and about 13°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18262
28162
38162
48061
58061
68060
77960
87960
97959
107859
117858
127858
137758
147757
157657
167656
177656
187556
197555
207455
217454
227454
237354
247353
257353
267252
277252
287252
297151
307151

How September really feels in Kirksville

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.

Kirksville 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
Jan34° / 19°1.66.64.59.50.0
Feb39° / 22°2.06.7410.40.1
Mar51° / 33°3.09.12.311.72.5
Apr62° / 43°4.511.40.6135.1
May72° / 54°5.113.1014.26.2
Jun82° / 64°4.211014.86.0
Jul85° / 68°3.99.5014.65.3
Aug83° / 65°3.79013.66.0
Sep76° / 56°3.37.9012.37.3
Oct64° / 45°2.980.210.95.9
Nov50° / 33°2.471.19.82.4
Dec38° / 24°1.96.339.20.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26535
36535
46535
56634
66535
76535
86535
96436
106436
116337
126337
136238
146139
156139
166040
175941
185941
196040
205941
215941
226040
235941
246040
256040
266040
276040
286040
296040
306040

Chance of precipitation in September

Any precipitation

Kirksville gets around 3.3 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 (%)
126
226
326
426
526
626
726
826
927
1027
1127
1228
1328
1428
1528
1629
1729
1829
1928
2028
2128
2227
2327
2427
2526
2626
2726
2826
2925
3025

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 19% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172222309
2192222288
3212322278
4232322267
5252322246
6272322235
7292321224
8312321214
9332320203
10352320193
11372319192
12382318182
13402317182
14422316172
15442316161
16462315161
17472214151
18492213151
19512212141
20522212131
21552111121
22572111110
23582011110
24592011100
2562191090
2663191080
2765181070
2865181070
2967171060
306917950

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
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257light breeze
267light 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 5:42 AM to 6:11 AM, and sunset from 6:38 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:426:38
212.95:436:36
312.85:446:35
412.85:456:33
512.85:466:31
612.75:476:30
712.75:486:28
812.65:496:26
912.65:506:25
1012.55:516:23
1112.55:526:21
1212.45:536:19
1312.45:546:18
1412.45:556:16
1512.35:566:14
1612.35:576:12
1712.25:586:11
1812.25:596:09
1912.16:006:07
2012.16:016:06
2112.06:026:04
2212.06:036:02
2311.96:046:00
2411.96:055:59
2511.96:065:57
2611.86:075:55
2711.86:085:54
2811.76:095:52
2911.76:105:50
3011.66:115:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.77 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 6.43 kWh/m² in July across the year — September's 4.77 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.3Bright
284.2Bright
294.2Bright
304.1Bright
Planning a trip in September

Is September a good time to visit Kirksville?

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

7.3
Sightseeing
1st-best month of the year
6.2
Beach & pool
4th-best month of the year

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

What to pack for Kirksville in September

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

In September, Kirksville 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 Kirksville in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kirksville peaks around June 21 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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 21UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Kirksville 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 Kirksville is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1816 µg/m³Oct 227 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr10Good
May13Moderate
Jun13Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov8Good
Dec9Good
Location & terrain

Where is Kirksville?

Kirksville sits at 40.2°N, 92.6°W, 981 ft above sea level, in United States. The nearest listed city is Ottumwa, 58 mi away.

Topography around Kirksville

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

Within 2 miles, the terrain around Kirksville has only modest variations in elevation — a maximum elevation change of 184 ft around an average of 955 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 302 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 577 ft.

The land around Kirksville is covered by grassland (40%) and trees (33%) within 2 miles, trees (38%), grassland (36%) and cropland (24%) within 10 miles, and cropland (36%), grassland (34%) and trees (29%) within 50 miles.

2 miles
184 ft
10 miles
302 ft
50 miles
577 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ottumwa 58 mi · Quincy 65 mi · Hannibal 73 mi · Columbia 87 mi · Burlington 88 mi · Indianola 95 mi · Macomb 103 mi · Newton 107 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 Kirksville (40.1947°, -92.5833°, elevation 981 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).