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's arrival coincides with a rise in the average high-temperature, moving from April's moderate 60.3°F (15.7°C) to an agreeable 70.3°F (21.3°C). Throughout the month of May, Rock Mill observes an average nighttime temperature of 52.9°F (11.6°C).Humidity
In May, the average relative humidity in Rock Mill is 78%.Rainfall
In Rock Mill, in May, it is raining for 11 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, there are 107.3 rainfall days, and 8.82" (224mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Rock Mill aggregates 0.2" (5mm) of snow. In Rock Mill, during the entire year, snow falls for 15.5 days and aggregates up to 2.76" (70mm) of snow.Daylight
The average length of the day in May is 14h and 26min.On the first day of May, sunrise is at 5:57 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:22 pm EDT.
Sunshine
In May, the average sunshine in Rock Mill, New Jersey, is 8.6h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Rock Mill. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 6 suggests this advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Rock Mill in May?
What is the average humidity in May in Rock Mill?
How much does it rain in Rock Mill in May?
What is the last month it snows in Rock Mill?
How many hours of daylight does Rock Mill have in May?
When are sunrise and sunset in May in Rock Mill?
How long on average sun shines in May in Rock Mill?
What are the months with the highest UV index in Rock Mill?
What is the UV index reading in May in Rock Mill?
Average temperature in May
Rock Mill, NJ
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in May: 52.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in May
Rock Mill, NJ
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Rock Mill, NJ
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Rock Mill, NJ
- Average humidity in May: 78%
The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall in May
Rock Mill, NJ
- Average rainfall in May: 0.83"
The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in May
Rock Mill, NJ
- Average rainfall days in May: 11 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (5.5 days).
Average snowfall in May
Rock Mill, NJ
- Average snowfall in May: 0.2"
The month with the highest snowfall is March (0.75").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Rock Mill, NJ
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rock Mill, NJ
- Average daylight in May: 14h 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 18min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Rock Mill, NJ
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is November (22.7 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in May
Rock Mill, NJ
- Average UV index in May: 6
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 May
Rock Mill, NJ
- Average cloud cover in May: 46
The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in May
Rock Mill, NJ
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Rock Mill, New Jersey, USA
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