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 shift into April is marked by a rise in the average high-temperature, moving from March's frosty 48.4°F (9.1°C) to a mild 60.6°F (15.9°C). Westbury encounters an average low-temperature of 43.9°F (6.6°C) during April nights.Humidity
The months with the lowest humidity are April, July and August, with an average relative humidity of 72%.Rainfall
In Westbury, during April, the rain falls for 7.9 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 83.7 rainfall days, and 6.22" (158mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In April, it is snowing for 0.3 days. Throughout April, 0.04" (1mm) of snow is accumulated. In Westbury, Pennsylvania, during the entire year, snow falls for 12.6 days and aggregates up to 1.73" (44mm) of snow.Daylight
In Westbury, the average length of the day in April is 13h and 18min.On the first day of the month, sunrise is at 6:42 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
The average sunshine in April is 8.4h.UV index
In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In April, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. To protect against the Sun's most potent rays, avoid direct exposure around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Westbury?
What is the least humid month?
What is the average humidity in April?
How much does it rain in April?
How much does it snow in April?
What is the average length of the day in April?
When are sunrise and sunset in April?
How many hours of sunshine does Westbury have in April?
What is the UV index intensity in April?
Average temperature in April
Westbury, PA
- Average high temperature in April: 60.6°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in April: 43.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in April
Westbury, 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
Westbury, PA
- Average wind speed in April: 8.2mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in April
Westbury, 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
Westbury, PA
- Average rainfall in April: 0.51"
The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in April
Westbury, PA
- Average rainfall days in April: 7.9 days
The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in April
Westbury, PA
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in April
Westbury, PA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Westbury, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
Westbury, PA
- Average sunshine days in April: 21.5 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (17.4 days).
Average UV index in April
Westbury, 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
Westbury, 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
Westbury, 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).
Westbury, Pennsylvania, USA
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