Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
South Mountain experiences a temperature shift with the start of April, with average high-temperatures moving from a frosty 48.7°F (9.3°C) in March to an enjoyable 61.2°F (16.2°C). South Mountain experiences a mean low-temperature of 41.7°F (5.4°C) during April.Humidity
In South Mountain, the average relative humidity in April is 76%.Rainfall
In South Mountain, in April, during 13.5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 125.3 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.4 snowfall days, in April, South Mountain aggregates 0.04" (1mm) of snow. In South Mountain, during the entire year, snow falls for 20.2 days and aggregates up to 3.54" (90mm) of snow.Daylight
In April, the average length of the day is 13h and 17min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:34 pm. On the last day of April, sunrise is at 6:10 am and sunset at 8:03 pm EDT.
Sunshine
In April, the average sunshine is 8.4h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 in April converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How many days does it rain in April in South Mountain?
What is the last month it snows?
How many hours of daylight does South Mountain have in April?
When are sunrise and sunset in April?
How many hours of sunshine does South Mountain have in April?
What is the UV index intensity in April in South Mountain?
Average temperature in April
South Mountain, PA
- Average high temperature in April: 61.2°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in April: 41.7°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in April
South Mountain, PA
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in April
South Mountain, PA
- Average wind speed in April: 7.8mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in April
South Mountain, PA
- Average humidity in April: 76%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is July (75%).
Average rainfall in April
South Mountain, PA
- Average rainfall in April: 1.02"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in April
South Mountain, PA
- Average rainfall days in April: 13.5 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in April
South Mountain, PA
- Average snowfall in April: 0.04"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
South Mountain, PA
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is January (6.7 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
South Mountain, PA
- Average daylight in April: 13h and 2min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in April
South Mountain, PA
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in April
South Mountain, PA
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
South Mountain, PA
- Average cloud cover in April: 45
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
South Mountain, PA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, May, August, September and October (5mi).
South Mountain, Pennsylvania, USA
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