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
As Greenfield enters May, the average high-temperature increases from the a fresh 54.1°F (12.3°C) of April to a comfortable 67.3°F (19.6°C). An average low-temperature of 46.6°F (8.1°C) marks the month of May.Humidity
In May, the average relative humidity is 75%.Rainfall
In May, the rain falls for 16.3 days. Throughout May, 2.48" (63mm) of precipitation is accumulated. In Greenfield, during the entire year, the rain falls for 158.8 days and collects up to 30" (762mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Greenfield aggregates 0.28" (7mm) of snow. In Greenfield, during the entire year, snow falls for 42.1 days and aggregates up to 24.53" (623mm) of snow.Daylight
The average length of the day in May in Greenfield is 14h and 38min.On the first day of the month, sunrise is at 5:43 am and sunset at 7:50 pm. On the last day of May, sunrise is at 5:15 am and sunset at 8:21 pm EDT.
Sunshine
The average sunshine in May is 8.7h.UV index
The months with the highest UV index in Greenfield are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health 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:
Take precautions - Protection against sunburn is recommended. Around midday, solar radiation is most harmful; hence, exposure should be limited. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
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 Greenfield have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Greenfield, MA
- Average high temperature in May: 67.3°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in May
Greenfield, MA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Greenfield, MA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Greenfield, MA
- Average humidity in May: 75%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Greenfield, MA
- Average rainfall in May: 2.48"
The wettest months (with the highest rainfall) are October and December (3.03").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Greenfield, MA
- Average rainfall days in May: 16.3 days
The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in May
Greenfield, MA
- Average snowfall in May: 0.28"
The month with the highest snowfall is February (7.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Greenfield, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Greenfield, MA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
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 30min).
Average sunshine days in May
Greenfield, MA
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
Greenfield, MA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Greenfield, MA
- Average cloud cover in May: 45
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Greenfield, MA
- Average visibility in May: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Greenfield, Massachusetts, USA
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