Lancaster weather in April

In April, Lancaster sees average daytime highs of 63°F and overnight lows near 45°F, with 3.6 in of precipitation across 10.3 wet days and about 13 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 58°F in the first days to 67°F by the end. The sky is clear or mostly clear about 26% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 36 min by month's end. Set against the rest of the year, April is Lancaster's 8th-clearest and 4th-windiest month. For the whole year in context, see Lancaster's year-round climate.

Daytime high
63°
7th warmest
Overnight low
45°
6th coldest
Precipitation
3.6 in
10.3 wet days
Daylight
13 h 06 min
5:34 AM – 6:37 PM
Cloud cover
63%
8th clearest
Wind
8 mph
4th windiest
Solar energy
5.1 kWh/m²
Travel score
5.3
out of 10

Lancaster is city in central Lancaster County, Pennsylvania, United States.

Density
3,116/km²
people per km²
Founded
1730

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 58°F in the first days to 67°F by the end.

A typical April day in Lancaster reaches about 63°F in the afternoon and slips back to 45°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 50°F and 76°F. Set against its neighbours, April runs about 12°F warmer than March and about 9°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15740
25740
35841
45841
55941
65942
76042
86042
96043
106143
116143
126244
136244
146244
156345
166345
176446
186446
196446
206446
216547
226547
236547
246648
256648
266648
276649
286749
296749
306749

How April really feels in Lancaster

Once humidity and wind are folded in, April 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

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

Lancaster weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 26°3.19.13.99.50.0
Feb42° / 27°2.993.810.40.3
Mar51° / 34°3.910.32.911.72.4
Apr63° / 45°3.610.30.3135.3
May72° / 55°3.611.4014.26.4
Jun81° / 64°3.711.1014.86.0
Jul85° / 69°3.911.1014.65.1
Aug83° / 67°3.410.3013.65.8
Sep76° / 60°4.39.3012.36.9
Oct65° / 48°3.68.40.110.96.0
Nov53° / 38°3.08.20.49.83.2
Dec44° / 31°3.69.22.39.20.6

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23961
33961
44060
54159
64159
74159
84159
94258
104258
114258
124258
134258
144258
154159
164159
174159
184159
194159
204159
214159
224258
234258
244159
254258
264258
274258
284357
294357
304357

Chance of precipitation in April

Any precipitationSnow

Lancaster gets around 3.6 in of rain and snow over 10.3 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 36% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1354
2354
3354
4354
5353
6353
7353
8342
9342
10342
11342
12342
13341
14351
15351
16351
17361
18361
19360
20360
21350
22350
23350
24350
25350
26350
27360
28360
29360
30360

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19820
29820
39820
49820
59730
69730
79730
89730
99541
109541
119541
129541
139451
149451
159361
169262
179262
189262
199172
209172
219172
229172
239082
248983
258983
268893
278893
2887103
2985114
3085114

Wind in April

Winds average 8 mph in April.

Across April, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light 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
257light breeze
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over April. Sunrise moves from 5:58 AM to 5:14 AM, and sunset from 6:22 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:586:22
212.45:566:23
312.55:556:24
412.55:536:25
512.65:516:26
612.65:506:27
712.75:486:28
812.75:466:29
912.85:456:30
1012.85:436:31
1112.85:426:32
1212.95:406:33
1312.95:386:34
1413.05:376:35
1513.05:356:36
1613.15:346:37
1713.15:326:38
1813.15:316:39
1913.25:296:40
2013.25:286:41
2113.35:266:42
2213.35:256:43
2313.45:236:44
2413.45:226:45
2513.45:206:46
2613.55:196:47
2713.55:186:49
2813.65:166:50
2913.65:156:51
3013.65:146:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.1 kWh/m².

For context, solar energy here swings from a low near 1.81 kWh/m² to a high of 6.1 kWh/m² in June across the year — April's 5.1 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in April

Is April a good time to visit Lancaster?

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

5.3
Sightseeing
6th-best month of the year
1.4
Beach & pool
7th-best month of the year

April is a reasonable time to visit Lancaster for sightseeing.

What to pack for Lancaster in April

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

In April, Lancaster sees daytime highs around 63°F and nights near 45°F. Worth packing: a warm layer, rain gear and sun protection. About 10 days see rain.

a warm layerrain gearsun protection

UV index in Lancaster in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lancaster peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 23UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug6High
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Lancaster in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lancaster 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 1417 µg/m³Nov 138 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Lancaster?

Lancaster sits at 40.0°N, 76.3°W, 361 ft above sea level, in United States. The nearest listed city is Lebanon, 22 mi away.

Topography around Lancaster

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

Within 2 miles, the terrain around Lancaster has only modest variations in elevation — a maximum elevation change of 246 ft around an average of 348 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 725 ft; within 50 miles, large variations in elevation — a maximum elevation change of 1,991 ft.

The land around Lancaster is covered by trees (48%) and artificial surfaces (35%) within 2 miles, cropland (33%), trees (31%) and grassland (26%) within 10 miles, and trees (55%) within 50 miles.

2 miles
246 ft
10 miles
725 ft
50 miles
1,991 ft
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Lebanon 22 mi · York 23 mi · Reading 29 mi · Bel Air North 34 mi · North Bel Air 35 mi · Harrisburg 35 mi · South Bel Air 35 mi · Bel Air South 37 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 Lancaster (40.0379°, -76.3055°, elevation 361 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).