April weather forecast and climate
Winterthur, DE

April in Winterthur, Delaware, is an enjoyable spring month, with average temperature fluctuating between 61.3°F (16.3°C) and 44.6°F (7°C).

Temperature

In Winterthur, the average high-temperature in April rises, from a chilly 49.3°F (9.6°C) in March, to a comfortable 61.3°F (16.3°C). In April, in Winterthur, Delaware, the average low-temperature is 44.6°F (7°C).

Humidity

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

Rainfall

In April, the rain falls for 16.3 days. Throughout April, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 168.9 rainfall days, and 35.55" (903mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Winterthur, snow falls for 0.4 days, with typically accumulated 0.31" (8mm) of snow. In Winterthur, during the entire year, snow falls for 21.9 days, and aggregates up to 12.05" (306mm) of snow.

Daylight

In Winterthur, the average length of the day is 13.3h.

Sunshine

In April, the average sunshine in Winterthur is 8.5h.

UV index

The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 in April interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in April in Winterthur?

In Winterthur, Delaware, in April, the average high-temperature is 61.3°F (16.3°C), and the average low-temperature is 44.6°F (7°C).

What is the least humid month in Winterthur?

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

What is the average humidity in April in Winterthur?

The average relative humidity in April is 72%.

How many days does it rain in April in Winterthur?

In April, in Winterthur, Delaware, the rain falls for 16.3 days. Throughout April, 2.87" (73mm) of precipitation is accumulated.

How many days does it snow in April in Winterthur?

In April, it is snowing for 0.4 days. Throughout April, 0.31" (8mm) of snow is accumulated.

How many hours of daylight does Winterthur have in April?

In Winterthur, Delaware, the average length of the day in April is 13.3h.

How long on average sun shines in April in Winterthur?

In Winterthur, the average sunshine in April is 8.5h.

What is the UV index reading in April in Winterthur?

In Winterthur, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in April - Winterthur, DE
  • Average high temperature in April: 61.3°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in April: 44.6°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 (25.3°F).

Average pressure in April - Winterthur, DE
  • Average pressure in April: 29.99"

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

Average wind speed in April - Winterthur, DE
  • Average wind speed in April: 8.5mph

The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in April - Winterthur, 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 - Winterthur, DE
  • Average rainfall in April: 2.87"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").

Average rainfall days in April - Winterthur, DE
  • Average rainfall days in April: 16.3 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in April - Winterthur, DE
  • Average snowfall in April: 0.31"

The month with the highest snowfall is March (3.58").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in April - Winterthur, DE
  • Average snowfall days in April: 0.4 days

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April / Average sunshine in April - Winterthur, DE
  • 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: 8.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.9h).

Average sunshine days in April - Winterthur, DE
  • Average sunshine days in April: 11.9 days

The month with the most sunshine days is November (18.6 days).
Months with the least sunshine days are May and July (9.8 days).

Average UV index in April - Winterthur, DE
  • Average UV index in April: 4

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

Average cloud cover in April - Winterthur, DE
  • Average cloud cover in April: 43

Months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in April - Winterthur, DE
  • Average visibility in April: 6mi

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