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 beginning of April signals a rise in the average high-temperature, moving from a cold 38.8°F (3.8°C) in March to a frosty 49.6°F (9.8°C). Alton witnesses an average low-temperature of 38.1°F (3.4°C) throughout the month of April.Humidity
In April, the average relative humidity is 78%.Rainfall
In Alton, in April, during 17.1 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 171.8 rainfall days, and 32.76" (832mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Alton, in April, snow falls for 3.3 days, with typically accumulated 1.14" (29mm) of snow. Throughout the year, there are 67.1 snowfall days, and 22.99" (584mm) of snow is accumulated.Daylight
In Alton, the average length of the day in April is 13h and 26min.On the first day of April, sunrise is at 6:48 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:08 pm EDT.
Sunshine
In Alton, the average sunshine in April is 7.7h.UV index
In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In April, the average maximum UV index of 3 translates into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Alton in April?
What is the average humidity in April?
How much does it rain in Alton in April?
How much does it snow in April?
How many hours of daylight does Alton have in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index reading in April in Alton?
Average temperature in April
Alton, NY
- Average high temperature in April: 49.6°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in April: 38.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in April
Alton, NY
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Alton, NY
- Average wind speed in April: 11.5mph
The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in April
Alton, NY
- Average humidity in April: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (76%).
Average rainfall in April
Alton, NY
- Average rainfall in April: 2.91"
The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in April
Alton, NY
- Average rainfall days in April: 17.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in April
Alton, NY
- Average snowfall in April: 1.14"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Alton, NY
- Average snowfall days in April: 3.3 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Alton, NY
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in April
Alton, NY
- Average sunshine days in April: 9.3 days
The month with the most sunshine days is May (12.7 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in April
Alton, NY
- 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 and December (UV index 1).
Average cloud cover in April
Alton, NY
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in April
Alton, NY
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Alton, New York, USA
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