May weather forecastRockland, DE
May
Weather in May
The last month of the spring, May, is a pleasant month in Rockland, Delaware, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 71.6°F (22°C).Temperature
Rockland experiences a temperature shift with the start of May, with average high-temperatures moving from a refreshing 61.3°F (16.3°C) in April to an agreeable 71.6°F (22°C). The average nighttime temperature in Rockland lowers to a cool 54.5°F (12.5°C) throughout May.Humidity
The average relative humidity in May in Rockland is 77%.Rainfall
In May, the rain falls for 18.7 days. Throughout May, 3.19" (81mm) of precipitation is accumulated. In Rockland, during the entire year, the rain falls for 168.9 days and collects up to 35.55" (903mm) of precipitation.Snowfall
Months with snowfall in Rockland are January through May, October through December. May is the last month it regularly snows in Rockland. During 0.1 snowfall days, in May, Rockland aggregates 0.12" (3mm) of snow. In Rockland, during the entire year, snow falls for 21.9 days and aggregates up to 12.05" (306mm) of snow.Daylight
In May, the average length of the day is 14h and 23min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:36 am and sunset at 8:24 pm EDT.
Sunshine
In Rockland, the average sunshine in May is 8.6h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Rockland, Delaware. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.Note: In May, a regular UV index of 6 translates into these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rockland, DE
- Average high temperature in May: 71.6°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in May: 54.5°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in May
Rockland, DE
- Average pressure in May: 30.01"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
Rockland, DE
- Average wind speed in May: 6.8mph
The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in May
Rockland, DE
- Average humidity in May: 77%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in May
Rockland, DE
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").
Average rainfall days in May
Rockland, DE
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in May
Rockland, DE
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Rockland, DE
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rockland, DE
- Average daylight in May: 14h and 24min
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 24min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in May
Rockland, DE
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is November (18.6 days).
The months with the least sunshine days are May and July (9.8 days).
Average UV index in May
Rockland, DE
- 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, November and December (UV index 2).
Average cloud cover in May
Rockland, DE
- Average cloud cover in May: 46
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Rockland, DE
- 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).
