April weather forecast
Johnstown, PA

Weather in April

April is a mild spring month in Johnstown, Pennsylvania, with temperature in the range of an average low of 38.5°F (3.6°C) and an average high of 57°F (13.9°C).

Temperature

In Johnstown, the average high-temperature in April increases from a chilly 44.2°F (6.8°C) in March to a mild 57°F (13.9°C). In April, the average low-temperature is 38.5°F (3.6°C).

Humidity

In Johnstown, the average relative humidity in April is 79%.

Rainfall

In Johnstown, Pennsylvania, it is raining for 15.3 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, in Johnstown, there are 152.7 rainfall days, and 21.1" (536mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Johnstown, in April, snow falls for 2.8 days, with typically accumulated 0.83" (21mm) of snow. Throughout the year, in Johnstown, there are 47.7 snowfall days, and 18.23" (463mm) of snow is accumulated.

Daylight

The average length of the day in April in Johnstown is 13h and 19min.
On the first day of the month, sunrise is at 6:59 am and sunset at 7:39 pm. On the last day of April, sunrise is at 6:16 am and sunset at 8:09 pm EDT.

Sunshine

The average sunshine in April is 7.5h.

UV index

The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 3 in April transform into the following instructions:
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. 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.
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FAQ

What is the temperature in April in Johnstown?

In Johnstown, Pennsylvania, in April, the average high-temperature is 57°F (13.9°C), and the average low-temperature is 38.5°F (3.6°C).

What is the average humidity in April in Johnstown?

The average relative humidity in April is 79%.

How many days does it rain in April in Johnstown?

In Johnstown, during April, the rain falls for 15.3 days and regularly aggregates up to 1.93" (49mm) of precipitation.

How much does it snow in Johnstown in April?

In Johnstown, Pennsylvania, during April, snow falls for 2.8 days and regularly aggregates up to 0.83" (21mm) of snow.

What is the average length of the day in April in Johnstown?

The average day length in April in Johnstown is 13h and 19min.

What time are sunrise and sunset in April in Johnstown?

On the first day of April, sunrise is at 6:59 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:09 pm EDT.

How many hours of sunshine does Johnstown have in April?

In April, the average sunshine duration in Johnstown, Pennsylvania, is 7.5h.

What is the UV index reading in April in Johnstown?

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

Average temperature in April
Johnstown, PA

Average temperature in April - Johnstown, PA
  • Average high temperature in April: 57°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in April: 38.5°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in April
Johnstown, PA

Average pressure in April - Johnstown, PA
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in April
Johnstown, PA

Average wind speed in April - Johnstown, PA
  • Average wind speed in April: 8.9mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in April
Johnstown, PA

Average humidity in April - Johnstown, PA
  • Average humidity in April: 79%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (78%).

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Average rainfall in April
Johnstown, PA

Average rainfall in April - Johnstown, PA
  • Average rainfall in April: 1.93"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.1").

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Average rainfall days in April
Johnstown, PA

Average rainfall days in April - Johnstown, PA
  • Average rainfall days in April: 15.3 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in April
Johnstown, PA

Average snowfall in April - Johnstown, PA
  • Average snowfall in April: 0.83"

The month with the highest snowfall is March (4.21").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Johnstown, PA

Average snowfall days in April - Johnstown, PA
  • Average snowfall days in April: 2.8 days

The month with the highest number of snowfall days is January (12 days).
The 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
Johnstown, PA

Average daylight in April / Average sunshine in April - Johnstown, PA
  • Average daylight in April: 13h and 19min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 21min).

  • Average sunshine in April: 7h and 30min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in April
Johnstown, PA

Average sunshine days in April - Johnstown, PA
  • Average sunshine days in April: 11.1 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (9 days).

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Average UV index in April
Johnstown, PA

Average UV index in April - Johnstown, PA
  • Average UV index in April: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in April
Johnstown, PA

Average cloud cover in April - Johnstown, PA
  • Average cloud cover in April: 52

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 39).

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Average visibility in April
Johnstown, PA

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

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

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