Harrisburg
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

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
April in Harrisburg, Pennsylvania, is a mild spring month, with temperature in the range of an average high of 60.1°F (15.6°C) and an average low of 41.7°F (5.4°C).

Temperature

In April, the average high-temperature increases, from a chilly 47.8°F (8.8°C) in March, to a mild 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, during 13.1 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 122.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Harrisburg. April is the last month it regularly snows. During 0.2 snowfall days, 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 13.3h.

Sunshine

In Harrisburg, the average sunshine is 8.3h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in April in Harrisburg?

The average high-temperature, in April, in Harrisburg, Pennsylvania, 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 in Harrisburg, Pennsylvania, are March and April, with an average relative humidity of 75%.

What is the average humidity in April in Harrisburg?

In April, the average relative humidity 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 in Harrisburg, Pennsylvania. 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 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 medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in April - Harrisburg, PA
  • Average high temperature in April: 15.6°C

The warmest month (with the highest average high temperature) is July (28.8°C).
The month with the lowest average high temperature is January (1.7°C).

  • Average low temperature in April: 5.4°C

The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-5.5°C).

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%).

Average rainfall in April - Harrisburg, PA
  • Average rainfall in April: 26mm

The wettest month (with the highest rainfall) is August (33mm).
Driest months (with the lowest rainfall) are January and February (18mm).

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 lowest number of rainy days is January (5.7 days).

Average snowfall in April - Harrisburg, PA
  • Average snowfall in April: 1mm

The month with the highest snowfall is February (33mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

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 lowest number of snowfall days are June, July, August, September and October (0 days).

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 shortest days is December (Average daylight: 9.4h).

  • Average sunshine in April: 8.3h

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

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).