May weather forecast
South Deerfield, MA

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Weather in May

May, the last month of the spring in South Deerfield, is a refreshing month, with an average temperature fluctuating between 67.5°F (19.7°C) and 46.9°F (8.3°C).

Temperature

As May arrives, a rise in the average high-temperature is observed, moving from a fresh 54.5°F (12.5°C) in April to a comfortable 67.5°F (19.7°C). Throughout May, South Deerfield anticipates an average low-temperature of 46.9°F (8.3°C).

Humidity

In South Deerfield, the average relative humidity in May is 75%.

Rainfall

In South Deerfield, in May, it is raining for 15.1 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, there are 147.7 rainfall days, and 28.9" (734mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in South Deerfield. During 0.1 snowfall days, in May, South Deerfield aggregates 0.24" (6mm) of snow. In South Deerfield, during the entire year, snow falls for 38.7 days and aggregates up to 23.07" (586mm) of snow.

Daylight

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

Sunshine

In May, the average sunshine in South Deerfield, Massachusetts, is 8.5h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In May, an average UV index of 5 transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the temperature in May in South Deerfield?

The average high-temperature and low-temperature during May are 67.5°F (19.7°C) and 46.9°F (8.3°C) respectively.

What is the average humidity in May in South Deerfield?

In May, the average relative humidity in South Deerfield is 75%.

How much does it rain in South Deerfield in May?

In May, the rain falls for 15.1 days. Throughout May, 2.32" (59mm) of precipitation is accumulated.

What is the last month it snows in South Deerfield?

May is the last month it regularly snows in South Deerfield. During 0.1 snowfall days, in May, South Deerfield aggregates 0.24" (6mm) of snow.

What is the average length of the day in May in South Deerfield?

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

What time are sunrise and sunset in May in South Deerfield?

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, in South Deerfield, Massachusetts, sunrise is at 5:15 am and sunset at 8:20 pm EDT.

How long on average sun shines in May in South Deerfield?

In May, the average sunshine duration in South Deerfield is 8.5h.

What is the month with the highest UV index in South Deerfield?

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

How high is the UV index in May in South Deerfield?

In South Deerfield, Massachusetts, the average daily maximum UV index in May is 5. A UV Index 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
South Deerfield, MA

Average temperature in May - South Deerfield, MA
  • Average high temperature in May: 67.5°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in May: 46.9°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in May
South Deerfield, MA

Average pressure in May - South Deerfield, 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
South Deerfield, MA

Average wind speed in May - South Deerfield, MA
  • Average wind speed in May: 6.4mph

The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in May
South Deerfield, MA

Average humidity in May - South Deerfield, 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
South Deerfield, MA

Average rainfall in May - South Deerfield, MA
  • Average rainfall in May: 2.32"

The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in May
South Deerfield, MA

Average rainfall days in May - South Deerfield, MA
  • Average rainfall days in May: 15.1 days

The month with the highest number of rainy days is April (15.3 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in May
South Deerfield, MA

Average snowfall in May - South Deerfield, MA
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
South Deerfield, MA

Average snowfall days in May - South Deerfield, MA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (10 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
South Deerfield, MA

Average daylight in May / Average sunshine in May - South Deerfield, 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 6min).

  • Average sunshine in May: 8h and 3min

The month with the most sunshine is July (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
South Deerfield, MA

Average sunshine days in May - South Deerfield, MA
  • Average sunshine days in May: 14.1 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (13.2 days).

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Average UV index in May
South Deerfield, MA

Average UV index in May - South Deerfield, 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
South Deerfield, MA

Average cloud cover in May - South Deerfield, MA
  • Average cloud cover in May: 46

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in May
South Deerfield, MA

Average visibility in May - South Deerfield, 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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South Deerfield, Massachusetts, USA

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