April weather forecastMarcus Hook, PA

April

Weather in April

April is a refreshing spring month in Marcus Hook, Pennsylvania, with an average temperature fluctuating between 45°F (7.2°C) and 61.5°F (16.4°C).

Temperature

An increase in the average high-temperature marks April, moving from March's frosty 49.6°F (9.8°C) to a comfortable 61.5°F (16.4°C). Throughout April, Marcus Hook registers a consistent average low-temperature of 45°F (7.2°C).

Humidity

April is the least humid month, with an average relative humidity of 71%.

Rainfall

In Marcus Hook, during April, the rain falls for 13.4 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Marcus Hook, during the entire year, the rain falls for 148.4 days and collects up to 25.94" (659mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Marcus Hook, in April, during 0.3 snowfall days, 0.2" (5mm) of snow is typically accumulated. Throughout the year, in Marcus Hook, there are 12.6 snowfall days, and 7.28" (185mm) of snow is accumulated.

Ocean temperature

In Marcus Hook, Pennsylvania, the average seawater temperature in April is 46.8°F (8.2°C).
Note: Taking a dip in 46.8°F (8.2°C) can be perilous. Submersion in temperatures under 50°F (10°C) triggers severe cold shock accompanied by hyperventilation.

Daylight

In April, the average length of the day is 13h and 17min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:26 pm. On the last day of April, sunrise is at 6:02 am and sunset at 7:55 pm EDT.

Sunshine

In Marcus Hook, Pennsylvania, the average sunshine in April is 8.5h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 4 in April translates into these instructions:
Adopt protective measures - It is advised to guard against sun damage. When the Sun is at its strongest around midday, find shade and limit exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in April, in Marcus Hook, is 61.5°F (16.4°C) and the average low-temperature is 45°F (7.2°C).

April is the least humid month, with an average relative humidity of 71%.

In Marcus Hook, the average relative humidity in April is 71%.

In Marcus Hook, in April, it is raining for 13.4 days, with typically 2.01" (51mm) of accumulated precipitation.

In Marcus Hook, during April, snow falls for 0.3 days and regularly aggregates up to 0.2" (5mm) of snow.

In April, the average ocean temperature is 46.8°F (8.2°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

In April, the average day length is 13h and 17min.

In April, on the first day of the month, sunrise is at 6:44 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:55 pm EDT.

In Marcus Hook, the average sunshine duration in April is 8.5h.

In Marcus Hook, Pennsylvania, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M April M J J A S O N D

Mar

April

May

Average high temperature

49.6°F

61.5°F

72°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.2mph

7.4mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.3

0.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

15.3

12.7

Average UV index

Average cloud cover

Average visibility

Average temperature in April
Marcus Hook, PA

Average high temperature in April: 61.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).

Average low temperature in April: 45°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in April
Marcus Hook, PA

Average pressure in April: 29.99"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in April
Marcus Hook, PA

Average wind speed in April: 8.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in April
Marcus Hook, PA

Average humidity in April: 71%

The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).

Average rainfall in April
Marcus Hook, PA

Average rainfall in April: 2.01"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").

Average rainfall days in April
Marcus Hook, PA

Average rainfall days in April: 13.4 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in April
Marcus Hook, PA

Average snowfall in April: 0.2"

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in April
Marcus Hook, PA

Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in April
Marcus Hook, PA

Average sea temperature in April: 46.7°F

The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

Average daylight in April /
Average sunshine in April
Marcus Hook, PA

Average daylight in April: 13h and 18min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

Average sunshine in April: 8h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in April
Marcus Hook, PA

Average sunshine days in April: 15.3 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in April
Marcus Hook, PA

Average UV index in April: 4

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

Average cloud cover in April
Marcus Hook, PA

Average cloud cover in April: 43

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in April
Marcus Hook, PA

Average visibility in April: 6mi

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