May weather forecastDorchester, NJ
May
Weather in May
May, the last month of the spring in Dorchester, is an agreeable month, with an average temperature fluctuating between 69.8°F (21°C) and 55.9°F (13.3°C).Temperature
May's arrival signals a temperature shift, moving from a moderate 60.6°F (15.9°C) in April to a pleasant 69.8°F (21°C). Throughout May, the temperature in Dorchester, New Jersey, falls to an average low of 55.9°F (13.3°C).Humidity
May and June, with an average relative humidity of 79%, are the most humid months.Rainfall
In May, the rain falls for 13.8 days. Throughout May, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 132.2 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
In Dorchester, New Jersey, snow does not fall in April through October.Daylight
In Dorchester, the average length of the day in May is 14h and 21min.On the first day of May, sunrise is at 6:00 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:20 pm EDT.
Sunshine
The average sunshine in May is 8.9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 during May leads to these advisories:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Dorchester, NJ
- Average high temperature in May: 69.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in May
Dorchester, NJ
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Dorchester, NJ
- Average wind speed in May: 8mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in May
Dorchester, NJ
- Average humidity in May: 79%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Dorchester, NJ
- Average rainfall in May: 1.46"
The wettest month (with the highest rainfall) is August (1.81").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in May
Dorchester, NJ
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in May
Dorchester, NJ
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Dorchester, NJ
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Dorchester, NJ
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Dorchester, NJ
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in May
Dorchester, NJ
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Dorchester, NJ
- Average cloud cover in May: 43
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in May
Dorchester, NJ
- 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).





