Lebanon weather in August

In August, Lebanon sees average daytime highs of 82°F and overnight lows near 64°F, with 3.1 in of rain across 9.4 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 39% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Lebanon's 2nd-clearest and 12th-windiest month. For the whole year in context, see Lebanon's year-round climate.

Daytime high
82°
2nd warmest
Overnight low
64°
11th coldest
Rainfall
3.1 in
9.4 wet days
Daylight
13 h 36 min
6:02 AM – 7:38 PM
Cloud cover
53%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.65 kWh/m²
Travel score
6.6
out of 10

Lebanon is city in Indiana, United States.

Density
392/km²
people per km²
Founded
1832

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 82°F through the month.

A typical August day in Lebanon reaches about 82°F in the afternoon and slips back to 64°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 89°F. Set against its neighbours, August runs on par with July and about 5°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18266
28266
38265
48265
58265
68265
78265
88265
98265
108265
118265
128265
138265
148265
158265
168264
178264
188264
198264
208264
218264
228264
238264
248264
258264
268264
278264
288163
298163
308163
318163

How August really feels in Lebanon

Once humidity and wind are folded in, August 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

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

Lebanon weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 21°3.19.54.89.50.0
Feb39° / 24°2.58.74.210.40.1
Mar50° / 33°3.7112.411.72.2
Apr62° / 44°4.711.90.4135.0
May72° / 54°4.813.7014.26.1
Jun80° / 64°4.412.2014.86.1
Jul83° / 66°3.611.4014.65.7
Aug82° / 64°3.19.4013.66.6
Sep76° / 57°2.87.6012.37.2
Oct64° / 46°3.390.110.95.8
Nov50° / 35°3.59.11.19.82.4
Dec39° / 26°2.99.73.79.20.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75644
85644
95644
105644
115644
125545
135545
145644
155644
165644
175644
185743
195743
205743
215743
225743
235644
245644
255842
265842
275842
285842
295842
305842
315941

Chance of precipitation in August

Any precipitation

Lebanon gets around 3.1 in of rain over 9.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
332
432
532
631
731
831
931
1031
1131
1231
1331
1431
1531
1630
1730
1830
1930
2029
2129
2229
2329
2429
2528
2628
2728
2827
2927
3027
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
18212626191
28222626181
38222526181
49222526171
59222526171
69232526161
710232526161
810232526151
910232426151
1011232426151
1111232426151
1211232427151
1311232327141
1411232327141
1511242427141
1611242427131
1711242427131
1811242427131
1911242427131
2011232527131
2111232527131
2212232527121
2312222527121
2413222627120
2513222627110
2614212627110
2716212627110
2817212627100
2918212526100
302020252690
312120252680

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, 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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 5:48 AM to 6:17 AM, and sunset from 7:56 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:487:56
214.15:497:55
314.15:507:54
414.05:507:53
514.05:517:52
614.05:527:51
713.95:537:50
813.95:547:48
913.95:557:47
1013.85:567:46
1113.85:577:45
1213.85:587:43
1313.75:597:42
1413.76:007:41
1513.66:017:39
1613.66:027:38
1713.66:037:36
1813.56:047:35
1913.56:057:34
2013.46:067:32
2113.46:077:31
2213.46:087:29
2313.36:097:28
2413.36:107:26
2513.26:117:25
2613.26:127:23
2713.16:137:21
2813.16:147:20
2913.16:157:18
3013.06:167:17
3113.06:177:15

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.65 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 6.31 kWh/m² in June across the year — August's 5.65 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.4Bright
255.4Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
315.2Bright
Planning a trip in August

Is August a good time to visit Lebanon?

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

6.6
Sightseeing
2nd-best month of the year
6.9
Beach & pool
1st-best month of the year

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

What to pack for Lebanon in August

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

In August, Lebanon sees daytime highs around 82°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Lebanon in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lebanon peaks around June 23 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 23UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Lebanon in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lebanon is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1416 µg/m³Oct 218 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar12Moderate
Apr12Good
May14Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Lebanon?

Lebanon sits at 40.0°N, 86.5°W, 942 ft above sea level, in United States. The nearest listed city is Zionsville, 13 mi away.

Topography around Lebanon

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

Within 2 miles, the terrain around Lebanon has only modest variations in elevation — a maximum elevation change of 75 ft around an average of 938 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 230 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 689 ft.

The land around Lebanon is covered by cropland (32%), artificial surfaces (26%) and grassland (24%) within 2 miles, cropland (77%) within 10 miles, and cropland (64%) and trees (24%) within 50 miles.

2 miles
75 ft
10 miles
230 ft
50 miles
689 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Zionsville 13 mi · Brownsburg 15 mi · Fairfield Heights 16 mi · Frankfort 16 mi · Westfield 18 mi · Carmel 19 mi · Avon 20 mi · Broad Ripple 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 Lebanon (40.0484°, -86.4692°, elevation 942 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).