Lebanon in Fall

In fall (September, October and November), Lebanon sees average daytime highs around 64°F and overnight lows near 48°F, with 11.2 in of precipitation over about 27 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.

Over the season highs ease from about 81°F in early September to 48°F by late November. The sky is clear or mostly clear about 34% of the time across fall, and the air most often feels dry.

Fall is Lebanon's 2nd-best season to visit on our travel score. For the whole year in context, see Lebanon's year-round climate.

Avg daytime high
64°F
2nd-warmest season
Avg overnight low
48°F
Precipitation
11.2 in
27 wet days
Avg wind
6 mph
Travel score
5.3
2nd-best season
Months
Sep · Oct · Nov

Temperature in Lebanon in Fall

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 81°F in early September to 48°F by late November.

A typical fall day in Lebanon reaches about 64°F and drops to 48°F overnight. The warmest of the three months is September, the coolest November.

20°40°60°80°SepOctNov

How fall really feels in Lebanon

Once humidity and wind are folded in, fall brings about 0 days that feel above 90°F and 17 that feel at or below 32°F.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
17
wind chill below the day's low

The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.

Lebanon weather by month

How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 25°3.49.34.49.50.0
Feb41° / 26°3.08.9410.40.2
Mar50° / 33°3.910.53.211.72.3
Apr62° / 44°3.810.80.4135.1
May72° / 54°3.611.9014.26.3
Jun81° / 63°3.611.3014.86.0
Jul85° / 68°3.610.2014.65.2
Aug83° / 66°3.210013.65.8
Sep76° / 59°4.39.4012.36.9
Oct64° / 47°3.78.70.110.95.9
Nov53° / 37°3.28.40.79.83.0
Dec43° / 30°3.79.32.99.20.5

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time across fall.

0%25%50%75%100%SepOctNov

Chance of precipitation in Fall

Any precipitationSnow

Lebanon gets around 11.2 in of rain and snow over 27 wet days across fall. The line is the day-by-day chance of measurable precipitation.

0%10%20%30%40%SepOctNov

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

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

0%25%50%75%100%SepOctNov

Wind in Fall

Winds average 6 mph across fall.

0246810SepOctNov

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 54 min in early September to 9 h 24 min by late November. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMSepOctNov

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 3.2 kWh/m².

024SepOctNov
Planning a trip in fall

Is fall a good time to visit Lebanon?

Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

5.3
Sightseeing
2nd-best month of the year
2.7
Beach & pool
2nd-best month of the year

fall is a reasonable time to visit Lebanon for sightseeing.

What to pack for Lebanon in Fall

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

In fall, Lebanon sees daytime highs around 64°F and nights near 48°F. Pack a warm layer. Worth having: light clothes and rain gear. About 27 days see rain.

a warm layerlight clothesrain gear

UV index in Lebanon in Fall

LowModerateHighVery highExtreme

Clear-sky midday UV across fall averages around 4 — 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 22 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 22UV 8Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Lebanon in Fall

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lebanon is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 138 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr14Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Lebanon?

Lebanon sits at 40.3°N, 76.4°W, 469 ft above sea level, in United States. The nearest listed city is Lancaster, 22 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 256 ft around an average of 525 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,201 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,178 ft.

The land around Lebanon is covered by trees (32%), grassland (27%) and artificial surfaces (27%) within 2 miles, trees (36%), cropland (36%) and grassland (23%) within 10 miles, and trees (58%) and cropland (21%) within 50 miles.

2 miles
256 ft
10 miles
1,201 ft
50 miles
2,178 ft
treesgrasslandcroplandartificial surfaceswater
Fall weather nearby: Lancaster 22 mi · Harrisburg 25 mi · Reading 25 mi · York 31 mi · Pottstown 40 mi · Carlisle 42 mi · Limerick 47 mi · Hanover 48 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 (40.3409°, -76.4113°, elevation 469 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.