Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May signals a clear increase in the average high-temperature, soaring from April's cool 50°F (10°C) to a comfortable 64.6°F (18.1°C). During the month of May, the temperature generally drops to a low average of 46.6°F (8.1°C).Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 76%.Rainfall
In Altona, New York, in May, it is raining for 16.7 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 146.4 rainfall days, and 27.36" (695mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.6 snowfall days, in May, Altona aggregates 0.04" (1mm) of snow. In Altona, New York, during the entire year, snow falls for 76.4 days and aggregates up to 37.52" (953mm) of snow.Daylight
The average length of the day in May is 14h and 52min.On the first day of the month, sunrise is at 5:42 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:11 am and sunset at 8:33 pm EDT.
Sunshine
In Altona, New York, the average sunshine in May is 8.4h.UV index
In Altona, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 4 suggests these recommendations:
Take precautions - Protection against sun damage is advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the least humid month?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Altona have in May?
What is the UV index intensity in May?
Average temperature in May
Altona, NY
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
Altona, NY
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Altona, NY
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in May
Altona, NY
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in May
Altona, NY
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in May
Altona, NY
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in May
Altona, NY
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (8.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Altona, NY
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is February (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Altona, NY
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in May
Altona, NY
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in May
Altona, NY
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Altona, NY
- Average cloud cover in May: 45
The month with the most cloud cover is February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in May
Altona, NY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (4mi).
Altona, New York, USA
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