May weather forecastDurham, CT
May
Weather in May
May, the last month of the spring in Durham, is a pleasant month, with an average temperature varying between 68°F (20°C) and 49.6°F (9.8°C).Temperature
A shift in the average high-temperature is noticeable in May, changing from a mild 56.8°F (13.8°C) in April to an agreeable 68°F (20°C). During May, Durham records an average temperature of 49.6°F (9.8°C) at night.Humidity
In May, the average relative humidity is 75%.Rainfall
In May, the rain falls for 17 days. Throughout May, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 160 rainfall days, and 34.57" (878mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Durham aggregates 0.51" (13mm) of snow. Throughout the year, there are 31.7 snowfall days, and 17.2" (437mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 32min.On the first day of May, sunrise is at 5:46 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:17 pm EDT.
Sunshine
The average sunshine in May in Durham is 8.1h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during May translates into the following guidance:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Durham, CT
- Average high temperature in May: 68°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in May
Durham, 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
Durham, CT
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in May
Durham, CT
- Average humidity in May: 75%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in May
Durham, CT
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Durham, CT
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Durham, CT
- Average snowfall in May: 0.51"
The month with the highest snowfall is March (4.33").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Durham, CT
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Durham, 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 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Durham, CT
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in May
Durham, CT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Durham, CT
- Average cloud cover in May: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Durham, CT
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, August, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and September (5mi).
