Kaukauna weather in September

In September, Kaukauna sees average daytime highs of 71°F and overnight lows near 52°F, with 2.8 in of rain across 9.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 75°F in the first days to 65°F by the end. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Kaukauna's 2nd-clearest and 9th-windiest month. For the whole year in context, see Kaukauna's year-round climate.

Daytime high
71°
4th warmest
Overnight low
52°
9th coldest
Rainfall
2.8 in
9.1 wet days
Daylight
12 h 18 min
5:38 AM – 5:56 PM
Cloud cover
55%
2nd clearest
Wind
8 mph
9th windiest
Solar energy
4.15 kWh/m²
Travel score
6.7
out of 10

Kaukauna is third-class city in Outagamie County, Wisconsin.

Density
757/km²
people per km²
Founded
1793

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 65°F by the end.

A typical September day in Kaukauna reaches about 71°F in the afternoon and slips back to 52°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 60°F and 81°F. Set against its neighbours, September runs about 7°F cooler than August and about 14°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17657
27557
37557
47556
57456
67456
77455
87355
97355
107354
117254
127253
137253
147153
157152
167152
177052
187051
196951
206951
216850
226850
236749
246749
256748
266648
276647
286547
296547
306446

How September really feels in Kaukauna

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.

Kaukauna weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan25° / 12°1.57.86.89.10.0
Feb29° / 14°1.36.55.510.20.0
Mar41° / 24°2.38.74.811.60.4
Apr54° / 36°3.211.52.713.23.1
May66° / 47°3.410.80.114.55.8
Jun76° / 58°3.610.5015.36.7
Jul80° / 62°3.510.60156.5
Aug78° / 60°3.510.4013.86.8
Sep71° / 52°2.89.1012.36.7
Oct57° / 41°2.89.60.310.84.1
Nov43° / 30°2.28.22.59.40.7
Dec31° / 19°1.87.45.68.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55545
65545
75545
85446
95446
105347
115248
125149
135149
145050
155050
164951
175050
185050
194951
204852
214951
224951
234951
244951
254852
264852
274951
284852
294852
304951

Chance of precipitation in September

Any precipitation

Kaukauna gets around 2.8 in of rain over 9.1 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 31% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
229
329
429
529
629
729
829
929
1030
1130
1230
1330
1431
1531
1631
1731
1831
1931
2031
2131
2231
2332
2432
2532
2632
2732
2832
2932
3032

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1382323152
2402222151
3412222141
4432221131
5452121121
6472120111
7482120111
8502019101
9512018101
1052201891
1153201791
1256201680
1357201580
1459201470
1559201470
1660201370
1763191260
1863191260
1966181150
2068171050
2169171040
227116940
237315840
247514830
257614730
267713730
278012620
288111620
298310520
30849520

Wind in September

Winds average 8 mph in September.

Across September, daily wind ranges from about 7 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
289light breeze
299light breeze
309light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 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 90 minutes over September. Sunrise moves from 5:21 AM to 5:55 AM, and sunset from 6:25 PM to 5:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:216:25
213.05:226:23
313.05:236:21
412.95:246:19
512.95:256:18
612.85:266:16
712.85:286:14
812.75:296:12
912.75:306:10
1012.65:316:08
1112.65:326:06
1212.55:346:04
1312.55:356:02
1412.45:366:00
1512.45:375:58
1612.35:385:56
1712.25:405:55
1812.25:415:53
1912.15:425:51
2012.15:435:49
2112.05:445:47
2212.05:465:45
2311.95:475:43
2411.95:485:41
2511.85:495:39
2611.85:505:37
2711.75:525:35
2811.75:535:33
2911.65:545:31
3011.65:555:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.15 kWh/m².

For context, solar energy here swings from a low near 1.46 kWh/m² to a high of 6.28 kWh/m² in June across the year — September's 4.15 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.1Bright
164.1Bright
174.0Bright
184.0Bright
194.0Moderate
203.9Moderate
213.9Moderate
223.8Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Kaukauna?

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

6.7
Sightseeing
2nd-best month of the year
4.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Kaukauna for sightseeing.

What to pack for Kaukauna in September

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

In September, Kaukauna sees daytime highs around 71°F and nights near 52°F. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Kaukauna in September

The nearest coast averages about 64°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 31 mi away) is warmest in August at about 69°F and coldest in March near 34°F.

It's comfortable for a long swim from Aug 9 to Aug 23 — about 0.5 months when the water holds above 68°F.

30°40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°F)Comfort
Jan37Bracing
Feb35Bracing
Mar34Bracing
Apr37Bracing
May43Bracing
Jun52Bracing
Jul65Cool
Aug69Refreshing
Sep64Cool
Oct55Bracing
Nov46Bracing
Dec39Bracing

UV index in Kaukauna in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kaukauna peaks around June 18 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 18UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr5High
May8Very high
Jun9Very high
Jul8Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Kaukauna?

Kaukauna sits at 44.3°N, 88.3°W, 656 ft above sea level, in United States. The nearest listed city is Appleton, 7.5 mi away.

Topography around Kaukauna

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

Within 2 miles, the terrain around Kaukauna has only modest variations in elevation — a maximum elevation change of 230 ft around an average of 705 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 499 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 774 ft.

The land around Kaukauna is covered by trees (32%), artificial surfaces (31%) and grassland (20%) within 2 miles, cropland (44%) within 10 miles, and cropland (39%) and trees (29%) within 50 miles.

2 miles
230 ft
10 miles
499 ft
50 miles
774 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Appleton 7.5 mi · Menasha 9.9 mi · Neenah 11 mi · De Pere 16 mi · Ashwaubenon 17 mi · Howard 21 mi · Green Bay 21 mi · Bellevue 21 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 Kaukauna (44.278°, -88.272°, elevation 656 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).