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
In May, the meteorological conditions change with the average high-temperature moving from a moderate 60.4°F (15.8°C) in April to a pleasant 70.5°F (21.4°C). Rocky Hill experiences a steady low-temperature of 53.2°F (11.8°C) throughout May.Humidity
In May, the average relative humidity is 78%.Rainfall
In Rocky Hill, during May, the rain falls for 12.6 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 119.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Rocky Hill aggregates 0.2" (5mm) of snow. Throughout the year, there are 16.4 snowfall days, and 4.41" (112mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 26min.On the first day of the month, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:30 am and sunset at 8:22 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Rocky Hill in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Rocky Hill have in May?
When is the sunrise / sunset in May in Rocky Hill?
How many hours of sunshine does Rocky Hill have in May?
What is the UV index reading in May?
Average temperature in May
Rocky Hill, NJ
- Average high temperature in May: 70.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in May: 53.2°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Rocky Hill, 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
Rocky Hill, NJ
- Average wind speed in May: 6.9mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in May
Rocky Hill, NJ
- Average humidity in May: 78%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Rocky Hill, NJ
- Average rainfall in May: 1.22"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in May
Rocky Hill, NJ
- Average rainfall days in May: 12.6 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in May
Rocky Hill, NJ
- Average snowfall in May: 0.2"
The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Rocky Hill, NJ
- Average snowfall days in May: 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 June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Rocky Hill, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Rocky Hill, NJ
- Average sunshine days in May: 15 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in May
Rocky Hill, NJ
- Average UV index in May: 5
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 May
Rocky Hill, NJ
- Average cloud cover in May: 46
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in May
Rocky Hill, 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).
Rocky Hill, New Jersey, USA
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