Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May brings a temperature increase, with average high-temperatures moving from April's mild 56.1°F (13.4°C) to an enjoyable 67.5°F (19.7°C). In the month of May, Norfolk experiences an average low-temperature of 49.5°F (9.7°C).Humidity
The average relative humidity in May in Norfolk is 75%.Rainfall
In Norfolk, in May, it is raining for 12.3 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 116.7 rainfall days, and 10.91" (277mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Norfolk. During 0.1 snowfall days, in May, Norfolk aggregates 0.12" (3mm) of snow. In Norfolk, during the entire year, snow falls for 23.4 days and aggregates up to 6.02" (153mm) of snow.Daylight
In Norfolk, Massachusetts, the average length of the day in May is 14h and 35min.On the first day of the month, sunrise is at 5:39 am and sunset at 7:44 pm. On the last day of May, sunrise is at 5:11 am and sunset at 8:14 pm EDT.
Sunshine
In May, the average sunshine is 8.3h.UV index
In Norfolk, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 5 during May translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Norfolk have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Norfolk have in May?
How high is the UV index in May?
Average temperature in May
Norfolk, MA
- Average high temperature in May: 67.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 49.5°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Norfolk, MA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Norfolk, MA
- Average wind speed in May: 7.3mph
The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in May
Norfolk, MA
- Average humidity in May: 75%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in May
Norfolk, MA
- Average rainfall in May: 1.02"
The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in May
Norfolk, MA
- Average rainfall days in May: 12.3 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in May
Norfolk, MA
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Norfolk, MA
- Average snowfall days in May: 0.1 days
The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Norfolk, MA
- Average daylight in May: 14h and 4min
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 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Norfolk, MA
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (14.6 days).
Average UV index in May
Norfolk, MA
- 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
Norfolk, MA
- Average cloud cover in May: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Norfolk, MA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, October, November and December (6mi).
The months with the lowest visibility are June, July, August and September (5mi).
Norfolk, Massachusetts, USA
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