April weather forecastSlippery Rock, PA
April
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 13h and 18min
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 48min
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: 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: 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: 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: 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).
