April weather forecast
Slippery Rock, PA

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Weather in April

April is a refreshing spring month in Slippery Rock, Pennsylvania, with an average temperature fluctuating between 38.8°F (3.8°C) and 57.9°F (14.4°C).

Temperature

April signals a shift in the average high-temperature, moving from March's chilly 45.1°F (7.3°C) to a mild 57.9°F (14.4°C). Nighttime temperatures hover around an average low of 38.8°F (3.8°C) in April.

Humidity

The months with the lowest humidity are April through August, with an average relative humidity of 79%.

Rainfall

April is the month with the most rainfall. Rain falls for 17.6 days and accumulates 3.74" (95mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Slippery Rock, in April, during 4.1 snowfall days, 1.18" (30mm) of snow is typically accumulated. Throughout the year, there are 75.3 snowfall days, and 32.05" (814mm) of snow is accumulated.

Daylight

The average length of the day in April is 13h and 20min.
On the first day of April, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 8:16 pm EDT.

Sunshine

In Slippery Rock, the average sunshine in April is 6.8h.

UV index

In Slippery Rock, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 3 during April translates into the following guidance:
Exercise prevention - Precautions against solar damage are endorsed. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.

Frequently asked questions

What are the temperatures in Slippery Rock in April?

The high-temperature during April is 57.9°F (14.4°C) and the low-temperature is 38.8°F (3.8°C).

What is the least humid month?

April through August, with an average relative humidity of 79%, are the least humid months in Slippery Rock.

What is the average humidity in April?

In April, the average relative humidity is 79%.

What is the rainiest month?

The month with the most rainfall is April, when the rain falls for 17.6 days and typically aggregates up to 3.74" (95mm) of precipitation.

How much does it rain in April?

In Slippery Rock, during April, the rain falls for 17.6 days and regularly aggregates up to 3.74" (95mm) of precipitation.

How much does it snow in April?

In Slippery Rock, during April, snow falls for 4.1 days and regularly aggregates up to 1.18" (30mm) of snow.

How many hours of daylight does Slippery Rock have in April?

In April, the average day length is 13h and 20min.

When are sunrise and sunset in April?

On the first day of April, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 8:16 pm EDT.

How long on average sun shines in April?

In Slippery Rock, the average sunshine duration in April is 6.8h.

What is the UV index intensity in April?

The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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
Slippery Rock, PA

Average temperature in April - Slippery Rock, PA
  • Average high temperature in April: 57.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in April: 38.8°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in April
Slippery Rock, PA

Average pressure in April - Slippery Rock, PA
  • Average pressure in April: 29.97"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).

Average wind speed in April
Slippery Rock, PA

Average wind speed in April - Slippery Rock, PA
  • Average wind speed in April: 7.7mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in April
Slippery Rock, PA

Average humidity in April - Slippery Rock, PA
  • Average humidity in April: 79%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May, June, July and August (79%).

Average rainfall in April
Slippery Rock, PA

Average rainfall in April - Slippery Rock, PA
  • Average rainfall in April: 3.74"

The wettest month (with the highest rainfall) is April (3.74").
The driest month (with the least rainfall) is November (2.36").

Average rainfall days in April
Slippery Rock, PA

Average rainfall days in April - Slippery Rock, PA
  • Average rainfall days in April: 17.6 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in April
Slippery Rock, PA

Average snowfall in April - Slippery Rock, PA
  • Average snowfall in April: 1.18"

The month with the highest snowfall is January (8.54").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in April
Slippery Rock, PA

Average snowfall days in April - Slippery Rock, PA
  • Average snowfall days in April: 4.1 days

The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Slippery Rock, PA

Average daylight in April / Average sunshine in April - Slippery Rock, 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 18min).

  • Average sunshine in April: 6h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

Average sunshine days in April
Slippery Rock, PA

Average sunshine days in April - Slippery Rock, PA
  • Average sunshine days in April: 9.4 days

The month with the most sunshine days is November (13.1 days).
The month with the least sunshine days is February (6.3 days).

Average UV index in April
Slippery Rock, PA

Average UV index in April - Slippery Rock, 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).

Average cloud cover in April
Slippery Rock, PA

Average cloud cover in April - Slippery Rock, PA
  • Average cloud cover in April: 54

The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 38).

Average visibility in April
Slippery Rock, PA

Average visibility in April - Slippery Rock, PA
  • Average visibility in April: 5mi

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

Slippery Rock, Pennsylvania, USA

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