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
April marks a minor ascent in the average high-temperature, adjusting from March's frosty 44.2°F (6.8°C) to a cool 53.1°F (11.7°C). Smithtown, in April, registers an average low temperature of 45°F (7.2°C), showing a minute reduction from daily highs.Humidity
In April, the average relative humidity is 73%.Rainfall
In April, the rain falls for 14.3 days. Throughout April, 2.99" (76mm) of precipitation is accumulated. In Smithtown, during the entire year, the rain falls for 155.9 days and collects up to 35.94" (913mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Smithtown, the average length of the day in April is 13h and 20min.On the first day of April, sunrise is at 6:34 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 7:48 pm EDT.
Sunshine
In April, the average sunshine is 8.6h.UV index
In Smithtown, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 3 during April translates into the following guidance:
Take precautions - Protection against skin and eye damage is obliged. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the average humidity in April?
How many days does it rain in April?
When it does not snow?
Does it snow in April?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Smithtown have in April?
What is the UV index reading in April?
Average temperature in April
Smithtown, NY
- Average high temperature in April: 53.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in April: 45°F
The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in April
Smithtown, NY
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Smithtown, NY
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in April
Smithtown, 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 (71%).
Average rainfall in April
Smithtown, NY
- Average rainfall in April: 2.99"
The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in April
Smithtown, NY
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in April
Smithtown, NY
- Average snowfall in April: 0"
The month with the highest snowfall is March (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Smithtown, NY
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is February (4.8 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
Smithtown, NY
- 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: 8h and 4min
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
Smithtown, NY
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in April
Smithtown, NY
- Average UV index in April: 3
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 and December (UV index 2).
Average cloud cover in April
Smithtown, NY
- Average cloud cover in April: 43
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in April
Smithtown, 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).
Smithtown, New York, USA
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