May weather forecastNewtown, CT
May
Weather in May
May brings comfortable warmth to Newtown, Connecticut, thereby heralding the onset of summer. The high temperature peaks at 67.3°F (19.6°C), perfectly balancing between the mildness of spring and the heat of summer. A substantial number of sunlight hours light up the days, paving way for diverse outdoor activities. Rain remains a regular guest, assisting in maintaining the lushness of Newtown's landscapes. The merry month of May combines the remnants of spring with the approaching summer to create inviting weather conditions.Temperature
In May, the meteorological conditions in Newtown change with the average high-temperature moving from a moderate 56.1°F (13.4°C) in April to a comfortable 67.3°F (19.6°C). Nighttime temperature in Newtown experiences an average drop to a fresh 50.2°F (10.1°C) in May.Humidity
In Newtown, the average relative humidity in May is 76%.Rainfall
In May, the rain falls for 17.8 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. In Newtown, Connecticut, during the entire year, the rain falls for 169.7 days and collects up to 36.93" (938mm) of precipitation.Snowfall
Months with snowfall in Newtown are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Newtown aggregates 0.2" (5mm) of snow. In Newtown, during the entire year, snow falls for 34.5 days and aggregates up to 17.01" (432mm) of snow.Daylight
The average length of the day in May in Newtown is 14h and 32min.On the first day of the month, sunrise is at 5:49 am and sunset at 7:51 pm. On the last day of May, in Newtown, sunrise is at 5:22 am and sunset at 8:20 pm EDT.
Sunshine
In Newtown, Connecticut, the average sunshine in May is 8.5h.UV index
In Newtown, Connecticut, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 5 in May leads to these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Newtown, CT
- Average high temperature in May: 67.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 50.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in May
Newtown, 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
Newtown, CT
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Newtown, CT
- Average humidity in May: 76%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in May
Newtown, CT
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is December (4.02").
The driest months (with the least rainfall) are January and September (2.4").
Average rainfall days in May
Newtown, CT
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in May
Newtown, CT
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Newtown, CT
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Newtown, CT
- Average daylight in May: 14h and 30min
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 12min).
- Average sunshine in May: 8h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Newtown, CT
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in May
Newtown, 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
Newtown, CT
- Average cloud cover in May: 46
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Newtown, CT
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).





