April weather forecastSouth Valley Stream, NY
April
Weather in April
April is a cool spring month in South Valley Stream, New York, with an average temperature fluctuating between 54.7°F (12.6°C) and 45.1°F (7.3°C).Temperature
A shift in the average high-temperature is noticeable in April, changing from a frosty 45.1°F (7.3°C) in March to a cool 54.7°F (12.6°C). In South Valley Stream, the average temperature during the nights of April drops to a chilly 45.1°F (7.3°C).Humidity
The average relative humidity in April is 73%.Rainfall
In South Valley Stream, during April, the rain falls for 12.8 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 135.3 rainfall days, and 18.62" (473mm) of precipitation is accumulated.Snowfall
In South Valley Stream, snow does not fall in April through September.Daylight
In South Valley Stream, New York, the average length of the day in April is 13h and 19min.On the first day of April, sunrise is at 6:37 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 7:50 pm EDT.
Sunshine
The average sunshine in April is 8.6h.UV index
In South Valley Stream, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In April, the maximum UV index of 4 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
South Valley Stream, NY
- Average high temperature in April: 54.7°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in April: 45.1°F
The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in April
South Valley Stream, NY
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
South Valley Stream, NY
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in April
South Valley Stream, NY
- Average humidity in April: 73%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall in April
South Valley Stream, NY
- Average rainfall in April: 1.46"
The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in April
South Valley Stream, NY
- Average rainfall days in April: 12.8 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in April
South Valley Stream, NY
- Average snowfall in April: 0"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in April
South Valley Stream, NY
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
South Valley Stream, NY
- 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 18min).
- Average sunshine in April: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
South Valley Stream, NY
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in April
South Valley Stream, NY
- 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, March, November and December (UV index 2).
Average cloud cover in April
South Valley Stream, NY
- Average cloud cover in April: 43
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
South Valley Stream, NY
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
