April weather forecast
Saint Marys, PA

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Weather in April

April in Saint Marys, Pennsylvania, is a cool spring month, with an average temperature fluctuating between 35.8°F (2.1°C) and 54.3°F (12.4°C).

Temperature

Saint Marys's weather in April presents a rise in the average high-temperature, moving from a wintry 42.3°F (5.7°C) in March to a cool 54.3°F (12.4°C). In Saint Marys, in April, the average low-temperature is a wintry 35.8°F (2.1°C).

Humidity

In April, the average relative humidity in Saint Marys is 80%.

Rainfall

The month with the most rainfall in Saint Marys is April, when the rain falls for 12.8 days and typically aggregates up to 1.5" (38mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Saint Marys, in April, snow falls for 3.3 days, with typically accumulated 0.98" (25mm) of snow. In Saint Marys, during the entire year, snow falls for 52.7 days and aggregates up to 16.14" (410mm) of snow.

Daylight

In April, the average length of the day in Saint Marys is 13h and 22min.
On the first day of the month, sunrise is at 6:55 am and sunset at 7:39 pm. On the last day of April, sunrise is at 6:11 am and sunset at 8:11 pm EDT.

Sunshine

In Saint Marys, the average sunshine in April is 6.7h.

UV index

In Saint Marys, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 3 during April translates into the following directions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What are the temperatures in Saint Marys in April?

In April, the average high-temperature and low-temperature are 54.3°F (12.4°C) and 35.8°F (2.1°C) respectively.

What is the average humidity in April in Saint Marys?

In April, the average relative humidity in Saint Marys is 80%.

What is the wettest month in Saint Marys?

The month with the most rainfall in Saint Marys, Pennsylvania, is April, when the rain falls for 12.8 days and typically aggregates up to 1.5" (38mm) of precipitation.

How many days does it rain in April in Saint Marys?

In Saint Marys, Pennsylvania, during April, the rain falls for 12.8 days and regularly aggregates up to 1.5" (38mm) of precipitation.

How much does it snow in Saint Marys in April?

In Saint Marys, Pennsylvania, during April, snow falls for 3.3 days and regularly aggregates up to 0.98" (25mm) of snow.

How many hours of daylight does Saint Marys have in April?

In April, the average day length in Saint Marys is 13h and 22min.

When is the sunrise / sunset in April in Saint Marys?

On the first day of April in Saint Marys, sunrise is at 6:55 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:11 pm EDT.

How many hours of sunshine does Saint Marys have in April?

In April, the average sunshine duration in Saint Marys, Pennsylvania, is 6.7h.

What is the UV index intensity in April in Saint Marys?

The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
Saint Marys, PA

Average temperature in April - Saint Marys, PA
  • Average high temperature in April: 54.3°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in April: 35.8°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

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Average pressure in April
Saint Marys, PA

Average pressure in April - Saint Marys, PA
  • Average pressure in April: 29.98"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).

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Average wind speed in April
Saint Marys, PA

Average wind speed in April - Saint Marys, PA
  • Average wind speed in April: 8.3mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in April
Saint Marys, PA

Average humidity in April - Saint Marys, PA
  • Average humidity in April: 80%

The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are June and July (78%).

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Average rainfall in April
Saint Marys, PA

Average rainfall in April - Saint Marys, PA
  • Average rainfall in April: 1.5"

The wettest month (with the highest rainfall) is April (1.5").
The driest months (with the least rainfall) are January and November (0.83").

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Average rainfall days in April
Saint Marys, PA

Average rainfall days in April - Saint Marys, PA
  • Average rainfall days in April: 12.8 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in April
Saint Marys, PA

Average snowfall in April - Saint Marys, PA
  • Average snowfall in April: 0.98"

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

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Average snowfall days in April
Saint Marys, PA

Average snowfall days in April - Saint Marys, PA
  • Average snowfall days in April: 3.3 days

The month with the highest number of snowfall days is January (12.2 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
Saint Marys, PA

Average daylight in April / Average sunshine in April - Saint Marys, PA
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in April: 6h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days in April
Saint Marys, PA

Average sunshine days in April - Saint Marys, PA
  • Average sunshine days in April: 14 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (13 days).

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Average UV index in April
Saint Marys, PA

Average UV index in April - Saint Marys, PA
  • Average UV index in April: 3

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

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Average cloud cover in April
Saint Marys, PA

Average cloud cover in April - Saint Marys, PA
  • Average cloud cover in April: 56

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 42).

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Average visibility in April
Saint Marys, PA

Average visibility in April - Saint Marys, PA
  • Average visibility in April: 5mi

The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are August and September (4mi).

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Saint Marys, Pennsylvania, USA

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