West Lafayette weather in October

In October, West Lafayette sees average daytime highs of 64°F and overnight lows near 45°F, with 3.1 in of precipitation across 9 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 70°F in the first days to 58°F by the end. The sky is clear or mostly clear about 37% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is West Lafayette's 4th-clearest and 7th-windiest month. For the whole year in context, see West Lafayette's year-round climate.

Daytime high
64°
6th warmest
Overnight low
45°
7th coldest
Precipitation
3.1 in
9 wet days
Daylight
10 h 54 min
7:05 AM – 6:00 PM
Cloud cover
56%
4th clearest
Wind
9 mph
7th windiest
Solar energy
3.21 kWh/m²
Travel score
5.9
out of 10

West Lafayette is city in Indiana, USA.

Density
1,273/km²
people per km²
Founded
1888

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 70°F in the first days to 58°F by the end.

A typical October day in West Lafayette reaches about 64°F in the afternoon and slips back to 45°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 77°F. Set against its neighbours, October runs about 12°F cooler than September and about 14°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
17151
27150
37050
47049
57049
66949
76948
86848
96848
106747
116747
126647
136646
146546
156546
166445
176445
186345
196344
206244
216244
226143
236143
246043
256042
266042
275942
285941
295841
305841
315740

How October really feels in West Lafayette

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

West Lafayette weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 20°2.79.14.99.40.0
Feb39° / 23°2.38.14.210.40.1
Mar50° / 32°3.310.42.411.72.2
Apr62° / 43°4.311.70.4135.0
May72° / 54°4.313.3014.26.1
Jun80° / 63°4.312.8014.86.0
Jul83° / 66°3.611.2014.65.7
Aug82° / 64°3.29.8013.66.5
Sep77° / 56°2.78.1012.37.1
Oct64° / 45°3.190.110.95.9
Nov50° / 35°3.18.51.29.82.4
Dec39° / 26°2.59.23.79.20.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35644
45644
55545
65545
75545
85446
95446
105347
115446
125446
135347
145347
155347
165248
175149
185050
194951
204852
214753
224753
234555
244555
254456
264456
274456
284258
294258
304159
314159

Chance of precipitation in October

Any precipitation

West Lafayette gets around 3.1 in of rain and snow over 9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 28% and peaks near 31% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
126
225
325
425
525
625
726
826
926
1027
1127
1228
1328
1428
1529
1629
1729
1830
1930
2030
2131
2231
2331
2431
2531
2631
2731
2831
2930
3030
3130

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
17312105
2751294
3751294
4771184
5771184
6781183
7791173
8801073
9811072
10821062
1183962
1285951
1385951
1486941
1587841
1689830
1789830
1889830
1989830
2089830
2190820
2291720
2391720
2491720
2591720
2691720
2791720
2892710
2992710
3093610
3193610

Wind in October

Winds average 9 mph in October.

Across October, daily wind ranges from about 8 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 6:49 AM to 7:23 AM, and sunset from 6:24 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:496:24
211.56:506:22
311.56:516:21
411.46:526:19
511.46:546:17
611.46:556:16
711.36:566:14
811.36:576:12
911.26:586:11
1011.26:596:09
1111.17:006:08
1211.17:016:06
1311.07:026:04
1411.07:036:03
1511.07:046:01
1610.97:056:00
1710.97:075:58
1810.87:085:57
1910.87:095:55
2010.77:105:54
2110.77:115:53
2210.67:125:51
2310.67:135:50
2410.67:155:49
2510.57:165:47
2610.57:175:46
2710.47:185:45
2810.47:195:43
2910.47:205:42
3010.37:225:41
3110.37:235:40

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.21 kWh/m².

For context, solar energy here swings from a low near 1.7 kWh/m² to a high of 6.32 kWh/m² in June across the year — October's 3.21 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.8Moderate
43.8Moderate
53.7Moderate
63.7Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.2Moderate
173.2Moderate
183.1Moderate
193.1Moderate
203.0Moderate
213.0Moderate
223.0Moderate
232.9Moderate
242.9Moderate
252.8Moderate
262.8Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.6Moderate
312.6Moderate
Planning a trip in October

Is October a good time to visit West Lafayette?

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

5.9
Sightseeing
5th-best month of the year
2.2
Beach & pool
6th-best month of the year

October is a reasonable time to visit West Lafayette for sightseeing.

What to pack for West Lafayette in October

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

In October, West Lafayette sees daytime highs around 64°F and nights near 45°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

UV index in West Lafayette in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in West Lafayette peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highHighModerateLowJul 10UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in West Lafayette in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in West Lafayette is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1516 µg/m³Oct 218 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar13Moderate
Apr12Good
May13Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov8Good
Dec9Good
Location & terrain

Where is West Lafayette?

West Lafayette sits at 40.4°N, 86.9°W, 610 ft above sea level, in United States. The nearest listed city is Lafayette, 1.9 mi away.

Topography around West Lafayette

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

Within 2 miles, the terrain around West Lafayette has only modest variations in elevation — a maximum elevation change of 269 ft around an average of 620 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 312 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 627 ft.

The land around West Lafayette is covered by trees (40%) and artificial surfaces (36%) within 2 miles, cropland (50%) and trees (27%) within 10 miles, and cropland (78%) within 50 miles.

2 miles
269 ft
10 miles
312 ft
50 miles
627 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Lafayette 1.9 mi · Frankfort 23 mi · Crawfordsville 27 mi · Lebanon 35 mi · Logansport 37 mi · Kokomo 41 mi · Danville 43 mi · Zionsville 47 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 West Lafayette (40.4259°, -86.9081°, elevation 610 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).