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
The shift from April to May sees an increase in the average high-temperature, transitioning from a cool 54.1°F (12.3°C) to an enjoyable 64.8°F (18.2°C). During the month of May, the nighttime temperature falls to an average of 50.5°F (10.3°C).Humidity
In Old Lyme, Connecticut, the average relative humidity in May is 78%.Rainfall
In Old Lyme, in May, it is raining for 11.2 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Old Lyme, Connecticut, there are 110.7 rainfall days, and 8.58" (218mm) of precipitation is accumulated.Snowfall
In Old Lyme, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 31min.On the first day of the month, sunrise is at 5:45 am and sunset at 7:47 pm. On the last day of May, in Old Lyme, sunrise is at 5:18 am and sunset at 8:15 pm EDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In Old Lyme, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
What is the average May temperature in Old Lyme?
What is the average humidity in May in Old Lyme?
How many days does it rain in May in Old Lyme?
When it does not snow in Old Lyme?
What is the average length of the day in May in Old Lyme?
When are sunrise and sunset in May in Old Lyme?
How long on average sun shines in May in Old Lyme?
What is the UV index intensity in May in Old Lyme?
Average temperature in May
Old Lyme, CT
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Old Lyme, CT
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Old Lyme, CT
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in May
Old Lyme, CT
- Average humidity in May: 78%
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Old Lyme, CT
- Average rainfall in May: 0.75"
The wettest month (with the highest rainfall) is December (0.94").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in May
Old Lyme, CT
- Average rainfall days in May: 11.2 days
The month with the highest number of rainy days is July (11.5 days).
The months with the least rainy days are February and November (6.6 days).
Average snowfall in May
Old Lyme, CT
- Average snowfall in May: 0"
The month with the highest snowfall is March (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Old Lyme, CT
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (5.4 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
Old Lyme, CT
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in May
Old Lyme, CT
- Average sunshine days in May: 17.1 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (15.8 days).
Average UV index in May
Old Lyme, CT
- 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
Old Lyme, CT
- Average cloud cover in May: 44
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Old Lyme, CT
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Old Lyme, Connecticut, USA
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