April weather forecast
Harrisburg, PA

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A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania
A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania

Weather in April

April signals a definite arrival of spring in Harrisburg, with warmer days and gentle showers replacing the remnants of winter. Observations indicate a significant fall in snowfall, dwindling to 0.04" (1mm), and temperatures climbing higher. The city witnesses a transformation, from fresh blooms in the parks to lakes thawing in the warm sunshine. Long daylight hours provide splendid opportunities for picnics and outdoor explorations. April's weather promises freshness and rejuvenation for residents and visitors.

Temperature

April indicates a change in the average high-temperature, moving up from a frosty 47.8°F (8.8°C) in March to a moderate 60.1°F (15.6°C). April's nights observe an average temperature of 41.7°F (5.4°C).

Humidity

March and April, with an average relative humidity of 75%, are the least humid months in Harrisburg.

Rainfall

In Harrisburg, in April, it is raining for 13.1 days, with typically 1.02" (26mm) of accumulated precipitation. In Harrisburg, during the entire year, the rain falls for 122.3 days and collects up to 11.73" (298mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. April is the last month it regularly snows in Harrisburg. During 0.2 snowfall days, in April, Harrisburg aggregates 0.04" (1mm) of snow. In Harrisburg, during the entire year, snow falls for 19.9 days and aggregates up to 4.29" (109mm) of snow.

Daylight

In April, the average length of the day is 13h and 18min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:32 pm. On the last day of April, in Harrisburg, sunrise is at 6:07 am and sunset at 8:02 pm EDT.

Sunshine

The average sunshine in April is 8.3h.

UV index

In Harrisburg, Pennsylvania, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In April, the maximum UV index of 4 suggests this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Stay sun-safe with clothing that is both closely woven and worn loosely. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

What are April temperatures in Harrisburg?

Harrisburg in April has an average high-temperature of 60.1°F (15.6°C) and an average low-temperature of 41.7°F (5.4°C).

What is the least humid month in Harrisburg?

The months with the lowest humidity in Harrisburg, Pennsylvania, are March and April, with an average relative humidity of 75%.

What is the average humidity in April in Harrisburg?

In Harrisburg, the average relative humidity in April is 75%.

How much does it rain in Harrisburg in April?

In April, in Harrisburg, Pennsylvania, the rain falls for 13.1 days. Throughout April, 1.02" (26mm) of precipitation is accumulated.

What is the last month it snows in Harrisburg?

April is the last month it regularly snows. During 0.2 snowfall days, in April, Harrisburg aggregates 0.04" (1mm) of snow.

What is the average length of the day in April in Harrisburg?

In Harrisburg, Pennsylvania, the average day length in April is 13h and 18min.

When is the sunrise / sunset in April in Harrisburg?

In April, on the first day of the month, sunrise is at 6:49 am and sunset at 7:32 pm. On the last day of the month, in Harrisburg, Pennsylvania, sunrise is at 6:07 am and sunset at 8:02 pm EDT.

How long on average sun shines in April in Harrisburg?

In Harrisburg, Pennsylvania, the average sunshine duration in April is 8.3h.

What is the UV index reading in April in Harrisburg?

In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Harrisburg, PA

Average temperature in April - Harrisburg, PA
  • Average high temperature in April: 60.1°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in April: 41.7°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in April
Harrisburg, PA

Average pressure in April - Harrisburg, PA
  • Average pressure in April: 29.99"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in April
Harrisburg, PA

Average wind speed in April - Harrisburg, PA
  • Average wind speed in April: 8.1mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in April
Harrisburg, PA

Average humidity in April - Harrisburg, PA
  • Average humidity in April: 75%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).

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Average rainfall in April
Harrisburg, PA

Average rainfall in April - Harrisburg, PA
  • Average rainfall in April: 1.02"

The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").

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Average rainfall days in April
Harrisburg, PA

Average rainfall days in April - Harrisburg, PA
  • Average rainfall days in April: 13.1 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in April
Harrisburg, PA

Average snowfall in April - Harrisburg, PA
  • Average snowfall in April: 0.04"

The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in April
Harrisburg, PA

Average snowfall days in April - Harrisburg, PA
  • Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Harrisburg, PA

Average daylight in April / Average sunshine in April - Harrisburg, PA
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in April: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in April
Harrisburg, PA

Average sunshine days in April - Harrisburg, PA
  • Average sunshine days in April: 15 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).

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Average UV index in April
Harrisburg, PA

Average UV index in April - Harrisburg, PA
  • Average UV index in April: 4

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in April
Harrisburg, PA

Average cloud cover in April - Harrisburg, PA
  • Average cloud cover in April: 45

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in April
Harrisburg, PA

Average visibility in April - Harrisburg, PA
  • Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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Harrisburg, Pennsylvania, USA

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