April weather forecast
Hellertown, PA

Weather in April

April is a mild spring month in Hellertown, Pennsylvania, with average temperature ranging between min 40.6°F (4.8°C) and max 58.6°F (14.8°C).

Temperature

In Hellertown, the average high-temperature increases, from a chilly 46°F (7.8°C) in March, to a mild 58.6°F (14.8°C). In Hellertown, the average low-temperature is 40.6°F (4.8°C).

Humidity

April and July, with an average relative humidity of 76%, are the least humid months in Hellertown.

Rainfall

In Hellertown, Pennsylvania,, it is raining for 15.5 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Hellertown, there are 153 rainfall days, and 26.81" (681mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Hellertown, during April, snow falls for 0.4 days and regularly aggregates up to 0.16" (4mm) of snow. Throughout the year, in Hellertown, there are 26.7 snowfall days, and 14.49" (368mm) of snow is accumulated.

Daylight

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

Sunshine

In Hellertown, the average sunshine in April is 8h.

UV index

In April, the average daily maximum UV index in Hellertown is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the least humid month in Hellertown?

Months with the lowest humidity in Hellertown are April and July, with an average relative humidity of 76%.

What is the average humidity in April in Hellertown?

The average relative humidity in April in Hellertown, Pennsylvania, is 76%.

How many days does it rain in April in Hellertown?

In April, in Hellertown, the rain falls for 15.5 days. Throughout April, 2.44" (62mm) of precipitation is accumulated.

How much does it snow in Hellertown in April?

In April, in Hellertown, it is snowing for 0.4 days. Throughout April, 0.16" (4mm) of snow is accumulated.

How many hours of daylight does Hellertown have in April?

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

How many hours of sunshine does Hellertown have in April?

In April, the average sunshine in Hellertown, Pennsylvania, is 8h.

What is the UV index intensity in April in Hellertown?

In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in April
Hellertown, PA

Average temperature in April - Hellertown, PA
  • Average high temperature in April: 58.6°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in April: 40.6°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 (21.6°F).

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Average pressure in April
Hellertown, PA

Average pressure in April - Hellertown, PA
  • Average pressure in April: 29.98"

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

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Average wind speed in April
Hellertown, PA

Average wind speed in April - Hellertown, PA
  • Average wind speed in April: 7.9mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in April
Hellertown, PA

Average humidity in April - Hellertown, PA
  • Average humidity in April: 76%

The month with the highest relative humidity is February (82%).
Months with the lowest relative humidity are April and July (76%).

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Average rainfall in April
Hellertown, PA

Average rainfall in April - Hellertown, PA
  • Average rainfall in April: 2.44"

The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in April
Hellertown, PA

Average rainfall days in April - Hellertown, PA
  • Average rainfall days in April: 15.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in April
Hellertown, PA

Average snowfall in April - Hellertown, PA
  • Average snowfall in April: 0.16"

The month with the highest snowfall is March (4.13").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Hellertown, PA

Average snowfall days in April - Hellertown, PA
  • Average snowfall days in April: 0.4 days

Months with the highest number of snowfall days are January and February (7.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Hellertown, PA

Average daylight in April / Average sunshine in April - Hellertown, 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: 9.3h).

  • Average sunshine in April: 8h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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Average sunshine days in April
Hellertown, PA

Average sunshine days in April - Hellertown, PA
  • Average sunshine days in April: 12.8 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).

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Average UV index in April
Hellertown, PA

Average UV index in April - Hellertown, 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
Hellertown, PA

Average cloud cover in April - Hellertown, PA
  • Average cloud cover in April: 47

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in April
Hellertown, PA

Average visibility in April - Hellertown, PA
  • Average visibility in April: 6mi

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

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