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
Rocky Hill in May sees a temperature change, with average high-temperatures moving from a mild 56.7°F (13.7°C) in April to a pleasant 68.5°F (20.3°C). Rocky Hill, in May, witnesses an average low-temperature of 49.5°F (9.7°C).Humidity
In Rocky Hill, the average relative humidity in May is 74%.Rainfall
In Rocky Hill, in May, during 17.3 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 164.5 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Rocky Hill aggregates 0.31" (8mm) of snow. In Rocky Hill, during the entire year, snow falls for 29.1 days and aggregates up to 15.63" (397mm) of snow.Daylight
In May, the average length of the day is 14h and 33min.On the first day of May, sunrise is at 5:46 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:18 pm EDT.
Sunshine
The average sunshine in May is 8.4h.UV index
In Rocky Hill, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 during May leads to these advisories:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much 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?
How many hours of sunshine does Rocky Hill have in May?
What is the UV index intensity in May?
Average temperature in May
Rocky Hill, CT
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 49.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in May
Rocky Hill, CT
- Average pressure in May: 30.01"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 May
Rocky Hill, CT
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in May
Rocky Hill, CT
- Average humidity in May: 74%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in May
Rocky Hill, CT
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Rocky Hill, CT
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in May
Rocky Hill, CT
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Rocky Hill, CT
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rocky Hill, CT
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Rocky Hill, CT
- Average sunshine days in May: 11 days
The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in May
Rocky Hill, CT
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Rocky Hill, CT
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Rocky Hill, CT
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, May and September (5mi).
Rocky Hill, Connecticut, USA
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