May weather forecast
Greenfield, MA

Weather in May

The last month of the spring, May, is an enjoyable month in Greenfield, Massachusetts, with temperature in the range of an average high of 67.3°F (19.6°C) and an average low of 46.6°F (8.1°C).

Temperature

In May, the average high-temperature rises from a cool 54.1°F (12.3°C) in April to an enjoyable 67.3°F (19.6°C). In May, in Greenfield, Massachusetts, the average low-temperature is 46.6°F (8.1°C).

Humidity

The average relative humidity in May in Greenfield 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

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Greenfield. 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

In May, the average length of the day is 14h and 38min.
On the first day of May, sunrise is at 5:44 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:20 pm EDT.

Sunshine

In Greenfield, 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 reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Greenfield?

The average high-temperature, in May, in Greenfield, Massachusetts, is 67.3°F (19.6°C), while the average low-temperature is 46.6°F (8.1°C).

What is the average humidity in May in Greenfield?

The average relative humidity in May in Greenfield is 75%.

How many days does it rain in May in Greenfield?

In Greenfield, during May, the rain falls for 16.3 days and regularly aggregates up to 2.48" (63mm) of precipitation.

What is the last month it snows in Greenfield?

May is the last month it regularly snows in Greenfield, Massachusetts. During 0.1 snowfall days, in May, Greenfield aggregates 0.28" (7mm) of snow.

How many hours of daylight does Greenfield have in May?

In Greenfield, Massachusetts, the average day length in May is 14h and 38min.

What time are sunrise and sunset in May in Greenfield?

In May, on the first day of the month, sunrise is at 5:44 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:20 pm EDT.

How long on average sun shines in May in Greenfield?

The average sunshine duration in May in Greenfield is 8.7h.

What are the months with the highest UV index in Greenfield?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Greenfield.

How high is the UV index in May in Greenfield?

The average daily maximum UV index in May in Greenfield is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Greenfield, MA

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).

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Average pressure in May
Greenfield, MA

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).

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Average wind speed in May
Greenfield, MA

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).

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Average humidity in May
Greenfield, MA

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%).

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Average rainfall in May
Greenfield, MA

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").

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Average rainfall days in May
Greenfield, MA

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).

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Average snowfall in May
Greenfield, MA

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").

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Average snowfall days in May
Greenfield, MA

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).

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Average daylight in May /
Average sunshine in May
Greenfield, MA

Average daylight in May / Average sunshine in May - Greenfield, MA
  • Average daylight in May: 14h and 38min

The month with the longest days is June (Average daylight: 15h and 16min).
The month with the shortest days is December (Average daylight: 9h and 7min).

  • Average sunshine in May: 8h and 42min

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).

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Average sunshine days in May
Greenfield, MA

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).

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Average UV index in May
Greenfield, MA

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).

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Average cloud cover in May
Greenfield, MA

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).

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Average visibility in May
Greenfield, MA

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).

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