April weather forecastRiverside, PA
April
Weather in April
April in Riverside, Pennsylvania, is a mild spring month, with temperature in the range of an average high of 57.7°F (14.3°C) and an average low of 39°F (3.9°C).Temperature
An increase in the average high-temperature marks April, moving from March's frosty 45.3°F (7.4°C) to a mild 57.7°F (14.3°C). During the nights in April, the temperature averages to a cold 39°F (3.9°C).Humidity
The least humid month is April, with an average relative humidity of 76%.Rainfall
In April, the rain falls for 16.6 days. Throughout April, 2.95" (75mm) of precipitation is accumulated. Throughout the year, there are 157.2 rainfall days, and 30.43" (773mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Riverside, in April, snow falls for 0.8 days, with typically accumulated 0.24" (6mm) of snow. Throughout the year, there are 33.2 snowfall days, and 16.57" (421mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 20min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:31 pm. On the last day of April, sunrise is at 6:04 am and sunset at 8:02 pm EDT.
Sunshine
The average sunshine in April is 7.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 during April translates into the following guidance:
Adopt protective measures - It is advised to guard against sun damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Riverside, PA
- Average high temperature in April: 57.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in April: 39°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in April
Riverside, PA
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Riverside, PA
- Average wind speed in April: 8mph
The windiest months (with the highest average wind speed) are March and April (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in April
Riverside, PA
- Average humidity in April: 76%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in April
Riverside, PA
- Average rainfall in April: 2.95"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in April
Riverside, PA
- Average rainfall days in April: 16.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in April
Riverside, PA
- Average snowfall in April: 0.24"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Riverside, PA
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Riverside, 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: 7h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in April
Riverside, PA
- Average sunshine days in April: 12.1 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in April
Riverside, PA
- Average UV index in April: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Riverside, PA
- Average cloud cover in April: 48
The months with the most cloud cover are January, February and December (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in April
Riverside, PA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
