May weather forecastWest Cornwall, CT
May
Weather in May
The last month of the spring, May, is a refreshing month in West Cornwall, Connecticut, with an average temperature fluctuating between 47.7°F (8.7°C) and 67.5°F (19.7°C).Temperature
With the transition into May, West Cornwall experiences an increase in average high-temperatures, moving up from a fresh 55.2°F (12.9°C) in April to an enjoyable 67.5°F (19.7°C). West Cornwall temperatures generally rest at a low of 47.7°F (8.7°C) during the May nights.Humidity
In May, the average relative humidity is 77%.Rainfall
In May, in West Cornwall, the rain falls for 16.9 days. Throughout May, 3.03" (77mm) of precipitation is accumulated. In West Cornwall, during the entire year, the rain falls for 160.5 days and collects up to 33.86" (860mm) of precipitation.Snowfall
Months with snowfall in West Cornwall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, West Cornwall aggregates 0.24" (6mm) of snow. In West Cornwall, during the entire year, snow falls for 40.2 days and aggregates up to 20.39" (518mm) of snow.Daylight
In May, the average length of the day is 14h and 34min.On the first day of May in West Cornwall, sunrise is at 5:48 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 8:21 pm EDT.
Sunshine
In May, the average sunshine in West Cornwall is 8.2h.UV index
In May, the average daily maximum UV index in West Cornwall, Connecticut, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 5 in May translates into this advice:
Make use of precautions - It is urged to ward off sun damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
West Cornwall, CT
- Average high temperature in May: 67.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in May: 47.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
West Cornwall, 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
West Cornwall, CT
- Average wind speed in May: 6.2mph
The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in May
West Cornwall, CT
- Average humidity in May: 77%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (74%).
Average rainfall in May
West Cornwall, CT
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is July (3.54").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in May
West Cornwall, CT
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in May
West Cornwall, CT
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
West Cornwall, CT
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
West Cornwall, 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 12min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in May
West Cornwall, CT
- Average sunshine days in May: 12 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
West Cornwall, 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
West Cornwall, CT
- Average cloud cover in May: 49
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in May
West Cornwall, 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).
