Lafayette weather in July

In July, Lafayette sees average daytime highs of 83°F and overnight lows near 66°F, with 3.6 in of rain across 11.2 wet days and about 14.6 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 83°F through the month. The sky is clear or mostly clear about 35% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Lafayette's 3rd-clearest and 11th-windiest month. For the whole year in context, see Lafayette's year-round climate.

Daytime high
83°
1st warmest
Overnight low
66°
12th coldest
Rainfall
3.6 in
11.2 wet days
Daylight
14 h 36 min
5:35 AM – 8:12 PM
Cloud cover
54%
3rd clearest
Wind
7 mph
11th windiest
Solar energy
6.32 kWh/m²
Travel score
5.7
out of 10

Lafayette is city in and the county seat of Tippecanoe County, Indiana, United States.

Density
932/km²
people per km²
Founded
1853

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 83°F through the month.

A typical July day in Lafayette reaches about 83°F in the afternoon and slips back to 66°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 90°F. Set against its neighbours, July runs about 3°F warmer than June and on par with August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18365
28366
38366
48366
58366
68366
78366
88366
98366
108366
118366
128366
138366
148366
158367
168367
178367
188367
198367
208367
218367
228366
238366
248366
258366
268366
278366
288366
298366
308366
318365

How July really feels in Lafayette

Once humidity and wind are folded in, July 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

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

Lafayette weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 4th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35644
45743
55743
65743
75743
85743
95842
105842
115842
125743
135743
145743
155644
165644
175644
185644
195545
205545
215545
225545
235545
245545
255545
265545
275644
285644
295644
305644
315644

Chance of precipitation in July

Any precipitation

Lafayette gets around 3.6 in of rain over 11.2 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
538
638
737
837
937
1037
1137
1237
1338
1438
1538
1638
1737
1837
1937
2037
2137
2237
2337
2436
2536
2635
2735
2834
2934
3034
3133

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 52% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
111202132150
211202132160
311202132160
411202132170
511202131170
610192132170
710192231180
810182231180
910182232190
109172232191
119172232201
128172232211
138162232211
148162231221
157162231231
167162230241
177162230241
187162229251
197162229251
206162229261
216162228262
226172228262
236172227262
246182227252
256182327242
266192327242
276202326232
286202426222
297212426212
307212426202
317212526192

Wind in July

Winds average 7 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 54 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 5:25 AM to 5:47 AM, and sunset from 8:16 PM to 8:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.95:258:16
214.85:268:16
314.85:268:16
414.85:278:16
514.85:278:16
614.85:288:16
714.85:288:15
814.85:298:15
914.85:308:15
1014.75:308:14
1114.75:318:14
1214.75:328:14
1314.75:328:13
1414.75:338:13
1514.65:348:12
1614.65:358:12
1714.65:358:11
1814.65:368:11
1914.55:378:10
2014.55:388:09
2114.55:398:08
2214.55:398:08
2314.45:408:07
2414.45:418:06
2514.45:428:05
2614.45:438:04
2714.35:448:04
2814.35:458:03
2914.35:468:02
3014.25:478:01
3114.25:478:00

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.32 kWh/m² — the sunniest month for solar.

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 — July's 6.32 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.0Intense
316.0Intense
Planning a trip in July

Is July a good time to visit Lafayette?

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

5.7
Sightseeing
6th-best month of the year
6.7
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Lafayette for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Lafayette in July

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

In July, Lafayette sees daytime highs around 83°F and nights near 66°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Lafayette in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in 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 Lafayette in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in 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 Lafayette?

Lafayette sits at 40.4°N, 86.9°W, 692 ft above sea level, in United States. The nearest listed city is West Lafayette, 1.9 mi away.

Topography around Lafayette

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

Within 2 miles, the terrain around Lafayette has only modest variations in elevation — a maximum elevation change of 246 ft around an average of 630 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 322 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 627 ft.

The land around Lafayette is covered by artificial surfaces (49%) and trees (34%) within 2 miles, cropland (49%) and trees (28%) within 10 miles, and cropland (77%) within 50 miles.

2 miles
246 ft
10 miles
322 ft
50 miles
627 ft
treesgrasslandcroplandartificial surfaceswater
July weather nearby: West Lafayette 1.9 mi · Frankfort 21 mi · Crawfordsville 26 mi · Lebanon 34 mi · Logansport 36 mi · Kokomo 39 mi · Danville 45 mi · Zionsville 45 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 Lafayette (40.4167°, -86.8753°, elevation 692 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).