April weather forecastRoslyn, PA
April
Weather in April
April in Roslyn, Pennsylvania, is a comfortable spring month, with an average temperature fluctuating between 44.1°F (6.7°C) and 61.2°F (16.2°C).Temperature
Observing a rise in April, the average high-temperature goes from March's chilly 48.7°F (9.3°C) to an enjoyable 61.2°F (16.2°C). Nighttime temperature lowers to an average of 44.1°F (6.7°C) in April.Humidity
The months with the lowest humidity are April, July and August, with an average relative humidity of 72%.Rainfall
In April, the rain falls for 11.9 days. Throughout April, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 122.4 rainfall days, and 12.68" (322mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows in Roslyn. During 0.1 snowfall days, in April, Roslyn aggregates 0.04" (1mm) of snow. Throughout the year, there are 16.3 snowfall days, and 4.72" (120mm) of snow is accumulated.Daylight
In Roslyn, the average length of the day in April is 13h and 18min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:25 pm. On the last day of April, sunrise is at 6:00 am and sunset at 7:54 pm EDT.
Sunshine
In April, the average sunshine is 8.4h.UV index
The average daily maximum UV index in April in Roslyn is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 4 in April translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Roslyn, PA
- Average high temperature in April: 61.2°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in April: 44.1°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in April
Roslyn, PA
- Average pressure in April: 29.99"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
Roslyn, PA
- Average wind speed in April: 8.3mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in April
Roslyn, PA
- Average humidity in April: 72%
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).
Average rainfall in April
Roslyn, PA
- Average rainfall in April: 0.98"
The wettest month (with the highest rainfall) is August (1.54").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days in April
Roslyn, PA
- Average rainfall days in April: 11.9 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (6.4 days).
Average snowfall in April
Roslyn, PA
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Roslyn, PA
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Roslyn, PA
- Average daylight in April: 13h and 18min
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 24min).
- Average sunshine in April: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
Roslyn, PA
- Average sunshine days in April: 15.4 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in April
Roslyn, PA
- Average UV index in April: 4
The months with the highest UV index are May, June, July and August (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
Roslyn, PA
- Average cloud cover in April: 44
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in April
Roslyn, PA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
