Harrisburg weather in April

In April, Harrisburg sees average daytime highs of 63°F and overnight lows near 44°F, with 3.6 in of precipitation across 10.6 wet days and about 13 hours of daylight. It is the 7th-warmest and 3rd-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 24% 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 Harrisburg's 8th-clearest and 4th-windiest month. For the whole year in context, see Harrisburg's year-round climate.

Daytime high
63°
7th warmest
Overnight low
44°
6th coldest
Precipitation
3.6 in
10.6 wet days
Daylight
13 h 06 min
5:36 AM – 6:40 PM
Cloud cover
64%
8th clearest
Wind
7 mph
4th windiest
Solar energy
5.01 kWh/m²
Travel score
5.2
out of 10

Harrisburg is capital city of the U.S. state of Pennsylvania and seat of Dauphin County.

Density
1,633/km²
people per km²
Founded
1719

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 Harrisburg reaches about 63°F in the afternoon and slips back to 44°F overnight — a 19°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)
15739
25739
35840
45840
55940
65941
76041
86041
96042
106142
116142
126243
136243
146244
156344
166344
176444
186445
196445
206445
216546
226546
236546
246547
256647
266647
276647
286748
296748
306748

How April really feels in Harrisburg

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.

Harrisburg weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 25°3.394.59.50.0
Feb41° / 26°2.88.94.210.40.2
Mar50° / 33°3.810.63.211.72.3
Apr63° / 44°3.610.60.3135.2
May72° / 53°3.512014.26.3
Jun81° / 63°3.411014.86.1
Jul85° / 68°3.610.3014.65.2
Aug83° / 66°3.19.6013.65.9
Sep76° / 59°4.39012.36.9
Oct64° / 47°3.58.30.110.95.9
Nov53° / 37°3.18.20.79.83.0
Dec43° / 30°3.59.22.99.20.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23862
33862
43862
53862
63961
73961
84060
94060
104060
113961
123961
133961
143961
153862
163862
173862
183763
193961
203961
213961
223961
233961
243961
253961
264060
274060
284060
294159
304258

Chance of precipitation in April

Any precipitationSnow

Harrisburg gets around 3.6 in of rain and snow over 10.6 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 36% and peaks near 37% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1373
2373
3373
4373
5372
6372
7372
8372
9362
10362
11361
12361
13361
14361
15361
16361
17361
18361
19360
20360
21350
22350
23350
24350
25350
26360
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 (%)
19910
29910
39820
49820
59820
69820
79730
89730
99730
109640
119541
129541
139451
149451
159451
169451
179451
189361
199361
209262
219262
229172
239172
249172
258983
268983
278893
2887103
2985114
3085114

Wind in April

Winds average 7 mph in April.

Across April, 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.

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
296calm
306calm

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 6:00 AM to 5:15 AM, and sunset from 6:24 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:006:24
212.45:596:25
312.55:576:26
412.55:556:27
512.65:546:28
612.65:526:29
712.75:506:30
812.75:496:31
912.85:476:32
1012.85:456:33
1112.85:446:35
1212.95:426:36
1312.95:416:37
1413.05:396:38
1513.05:376:39
1613.15:366:40
1713.15:346:41
1813.25:336:42
1913.25:316:43
2013.25:306:44
2113.35:286:45
2213.35:276:46
2313.45:256:47
2413.45:246:48
2513.45:226:49
2613.55:216:50
2713.55:206:51
2813.65:186:52
2913.65:176:53
3013.65:156:54

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.01 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 6.06 kWh/m² in June across the year — April's 5.01 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.9Bright
114.9Bright
124.9Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in April

Hazard calendar for Harrisburg

In seasonPeak

None of Harrisburg's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Harrisburg sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Harrisburg?

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

5.2
Sightseeing
6th-best month of the year
1.4
Beach & pool
7th-best month of the year

April is a reasonable time to visit Harrisburg for sightseeing.

What to pack for Harrisburg in April

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

In April, Harrisburg sees daytime highs around 63°F and nights near 44°F. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

UV index in Harrisburg 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 Harrisburg 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 Harrisburg 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 Harrisburg 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 1316 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar12Moderate
Apr13Moderate
May14Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Harrisburg?

Harrisburg sits at 40.3°N, 76.9°W, 331 ft above sea level, in United States. The nearest listed city is Carlisle, 17 mi away.

Topography around Harrisburg

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

Within 2 miles, the terrain around Harrisburg has only modest variations in elevation — a maximum elevation change of 335 ft around an average of 367 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,260 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,300 ft.

The land around Harrisburg is covered by artificial surfaces (39%), trees (32%) and water (21%) within 2 miles, trees (59%) within 10 miles, and trees (58%) and cropland (22%) within 50 miles.

2 miles
335 ft
10 miles
1,260 ft
50 miles
2,300 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Carlisle 17 mi · York 23 mi · Lebanon 25 mi · Hanover 33 mi · Lancaster 35 mi · Chambersburg 47 mi · Westminster 48 mi · Reading 50 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 Harrisburg (40.2737°, -76.8844°, elevation 331 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).