April weather forecast
Delaware City, DE

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Weather in April

In April, Delaware City experiences a significant shift in weather as spring starts to take effect. During this month, the city experiences a welcome change in temperature and rainfall. The conditions start to dry up, with rain and snow becoming less frequent. Average high temperatures shoot up to 62.4°F (16.9°C), a stark contrast from the lingering winter freeze. Visitors and residents enjoy longer daylight hours, with sunshine illuminating the city for most of the day.

Temperature

April's arrival coincides with a rise in the average high-temperature, moving from March's fresh 50.2°F (10.1°C) to an enjoyable 62.4°F (16.9°C). In Delaware City, the expected average low-temperature for April is a chilly 46°F (7.8°C).

Humidity

The least humid month is April, with an average relative humidity of 72%.

Rainfall

In April, the rain falls for 13.4 days. Throughout April, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 145.9 rainfall days, and 24.45" (621mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.1 snowfall days, in April, Delaware City aggregates 0.04" (1mm) of snow. Throughout the year, there are 13 snowfall days, and 5.24" (133mm) of snow is accumulated.

Ocean temperature

In Delaware City, in April, the average water temperature is 47.7°F (8.7°C).
Note: Entering waters of 47.7°F (8.7°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.

Daylight

In Delaware City, the average length of the day in April is 13h and 16min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:26 pm. On the last day of April, sunrise is at 6:03 am and sunset at 7:55 pm EDT.

Sunshine

The average sunshine in April is 8.6h.

UV index

In Delaware City, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 4 in April translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average April temperature?

An average high-temperature, in April, in Delaware City, is 62.4°F (16.9°C) and the average low-temperature is 46°F (7.8°C).

What is the least humid month?

April is the least humid month, with an average relative humidity of 72%.

What is the average humidity in April?

In April, the average relative humidity is 72%.

How many days does it rain in April?

In Delaware City, during April, the rain falls for 13.4 days and regularly aggregates up to 1.89" (48mm) of precipitation.

What is the last month it snows?

April is the last month it regularly snows. During 0.1 snowfall days, in April, Delaware City aggregates 0.04" (1mm) of snow.

What is the ocean temperature in April?

In Delaware City, the average seawater temperature in April is 47.7°F (8.7°C). Swimming in 47.7°F (8.7°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in April?

The average day length in April is 13h and 16min.

What time are sunrise and sunset in April?

In April, on the first day of the month, sunrise is at 6:45 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 7:55 pm EDT.

How many hours of sunshine does Delaware City have in April?

In Delaware City, the average sunshine duration in April is 8.6h.

What is the UV index intensity in April?

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Delaware City, DE

Average temperature in April - Delaware City, DE
  • Average high temperature in April: 62.4°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in April: 46°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in April
Delaware City, DE

Average pressure in April - Delaware City, DE
  • 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 (29.94"Hg).

Average wind speed in April
Delaware City, DE

Average wind speed in April - Delaware City, DE
  • Average wind speed in April: 8.8mph

The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in April
Delaware City, DE

Average humidity in April - Delaware City, DE
  • Average humidity in April: 72%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in April
Delaware City, DE

Average rainfall in April - Delaware City, DE
  • Average rainfall in April: 1.89"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.54").

Average rainfall days in April
Delaware City, DE

Average rainfall days in April - Delaware City, DE
  • Average rainfall days in April: 13.4 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in April
Delaware City, DE

Average snowfall in April - Delaware City, DE
  • Average snowfall in April: 0.04"

The month with the highest snowfall is January (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in April
Delaware City, DE

Average snowfall days in April - Delaware City, DE
  • Average snowfall days in April: 0.1 days

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in April
Delaware City, DE

Average sea temperature in April - Delaware City, DE
  • Average sea temperature in April: 47.6°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).

Average daylight in April /
Average sunshine in April
Delaware City, DE

Average daylight in April / Average sunshine in April - Delaware City, DE
  • Average daylight in April: 13h and 2min

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 4min

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
Delaware City, DE

Average sunshine days in April - Delaware City, DE
  • Average sunshine days in April: 14.4 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in April
Delaware City, DE

Average UV index in April - Delaware City, DE
  • 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
Delaware City, DE

Average cloud cover in April - Delaware City, DE
  • Average cloud cover in April: 42

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in April
Delaware City, DE

Average visibility in April - Delaware City, DE
  • 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).

Delaware City, Delaware, USA

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