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
The onset of April marks an increase in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in March to a moderate 56.5°F (13.6°C). South Williamsport records an average temperature drop to an icy 37.8°F (3.2°C) in April.Humidity
The months with the lowest humidity in South Williamsport, Pennsylvania, are April and July, with an average relative humidity of 77%.Rainfall
April is the month with the most rainfall in South Williamsport. Rain falls for 15 days and accumulates 1.93" (49mm) of precipitation.Snowfall
Months with snowfall in South Williamsport are January through April, October through December. April is the last month it regularly snows in South Williamsport, Pennsylvania. During 0.9 snowfall days, in April, South Williamsport aggregates 0.16" (4mm) of snow. In South Williamsport, during the entire year, snow falls for 39.1 days and aggregates up to 7.56" (192mm) of snow.Daylight
The average length of the day in April in South Williamsport is 13h and 21min.On the first day of April in South Williamsport, sunrise is at 6:49 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 8:04 pm EDT.
Sunshine
The average sunshine in April in South Williamsport is 7.7h.UV index
In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What is the temperature in April in South Williamsport?
What are the least humid months in South Williamsport?
What is the average humidity in April in South Williamsport?
What is the wettest month in South Williamsport?
How many days does it rain in April in South Williamsport?
What is the last month it snows in South Williamsport?
What is the average length of the day in April in South Williamsport?
When is the sunrise / sunset in April in South Williamsport?
How long on average sun shines in April in South Williamsport?
How high is the UV index in April in South Williamsport?
Average temperature in April
South Williamsport, PA
- Average high temperature in April: 56.5°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in April: 37.8°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
South Williamsport, 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
South Williamsport, PA
- Average wind speed in April: 7.5mph
The windiest months (with the highest average wind speed) are January, March and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in April
South Williamsport, PA
- Average humidity in April: 77%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in April
South Williamsport, PA
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is April (1.93").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in April
South Williamsport, PA
- Average rainfall days in April: 15 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in April
South Williamsport, PA
- Average snowfall in April: 0.16"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
South Williamsport, PA
- Average snowfall days in April: 0.9 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
South Williamsport, 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: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).
Average sunshine days in April
South Williamsport, PA
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in April
South Williamsport, PA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in April
South Williamsport, PA
- Average cloud cover in April: 50
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in April
South Williamsport, PA
- Average visibility in April: 6mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is September (4mi).
South Williamsport, Pennsylvania, USA
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