May weather forecastGrantville, CT
May
Weather in May
The last month of the spring, May, is an enjoyable month in Grantville, Connecticut, with an average temperature ranging between min 47.3°F (8.5°C) and max 67.1°F (19.5°C).Temperature
Grantville's weather in May shows a rise in the average high-temperature, moving up from April's moderate 55.4°F (13°C) to a still refreshing 67.1°F (19.5°C). Grantville experiences a nighttime temperature average of 47.3°F (8.5°C) during May.Humidity
In Grantville, the average relative humidity in May is 76%.Rainfall
In Grantville, in May, it is raining for 16.9 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 157.2 rainfall days, and 33.31" (846mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Grantville aggregates 0.16" (4mm) of snow. Throughout the year, there are 45.3 snowfall days, and 25.63" (651mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 35min.On the first day of the month, sunrise is at 5:47 am and sunset at 7:51 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:21 pm EDT.
Sunshine
In May, the average sunshine is 8h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Grantville, CT
- Average high temperature in May: 67.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in May: 47.3°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in May
Grantville, 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
Grantville, CT
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Grantville, CT
- Average humidity in May: 76%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (74%).
Average rainfall in May
Grantville, CT
- Average rainfall in May: 2.95"
The wettest months (with the highest rainfall) are October and December (3.31").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in May
Grantville, CT
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in May
Grantville, CT
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grantville, CT
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grantville, CT
- Average daylight in May: 14h and 36min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in May
Grantville, CT
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in May
Grantville, CT
- Average UV index in May: 5
The month with the highest UV index is June (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
Grantville, CT
- Average cloud cover in May: 50
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in May
Grantville, CT
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
