April weather forecast and climate
Harrisburg, PA

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 in Harrisburg, Pennsylvania, is a moderate spring month, with average temperature varying between 41.7°F (5.4°C) and 60.1°F (15.6°C).

Temperature

In Harrisburg, Pennsylvania, the average high-temperature increases, from a frosty 47.8°F (8.8°C) in March, to a moderate 60.1°F (15.6°C). The average low-temperature, in Harrisburg, is 41.7°F (5.4°C).

Humidity

Months with the lowest humidity are March and April, with an average relative humidity of 75%.

Rainfall

In Harrisburg, Pennsylvania, during 13.1 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. 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. During 0.2 snowfall days, in April, Harrisburg aggregates 0.04" (1mm) of snow. Throughout the year, in Harrisburg, Pennsylvania, there are 19.9 snowfall days, and 4.29" (109mm) of snow is accumulated.

Daylight

The average length of the day in April is 13.3h.

Sunshine

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

UV index

In April, the average daily maximum UV index in Harrisburg is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: In April, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in April in Harrisburg?

The average high-temperature, in April, in Harrisburg, is 60.1°F (15.6°C), while the average low-temperature is 41.7°F (5.4°C).

What is the least humid month in Harrisburg?

Months with the lowest humidity are March and April, with an average relative humidity of 75%.

What is the average humidity in April in Harrisburg?

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

How much does it rain in Harrisburg in April?

In Harrisburg, during April, the rain falls for 13.1 days and regularly aggregates up to 1.02" (26mm) of precipitation.

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.

How many hours of daylight does Harrisburg have in April?

In Harrisburg, Pennsylvania, the average length of the day in April is 13.3h.

How many hours of sunshine does Harrisburg have in April?

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

What is the UV index reading in April in Harrisburg?

In Harrisburg, Pennsylvania, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

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"

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

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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%).
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").
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).
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: 13.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in April: 8.3h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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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

Months with the highest UV index are May, June and July (UV index 6).
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

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

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

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