May weather forecast
Deerfield, MA

Share

Weather in May

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

Temperature

May brings a temperature change, with average high-temperatures moving from April's fresh 54.5°F (12.5°C) to an enjoyable 67.5°F (19.7°C). An average nighttime temperature of 46.9°F (8.3°C) is recorded in Deerfield during May.

Humidity

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

Rainfall

In May, in Deerfield, the rain falls for 15.1 days. Throughout May, 2.32" (59mm) of precipitation is accumulated. In Deerfield, Massachusetts, during the entire year, the rain falls for 147.7 days and collects up to 28.9" (734mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Deerfield. During 0.1 snowfall days, in May, Deerfield aggregates 0.24" (6mm) of snow. Throughout the year, in Deerfield, there are 38.7 snowfall days, and 23.07" (586mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 38min.
On the first day of May in Deerfield, Massachusetts, 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 Deerfield, Massachusetts, the average sunshine in May is 8.5h.

UV index

The months with the highest UV index in Deerfield are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
[Resources]

Frequently asked questions

What are May temperatures in Deerfield?

In May, the average high-temperature and low-temperature in Deerfield, Massachusetts, are 67.5°F (19.7°C) and 46.9°F (8.3°C) respectively.

What is the average humidity in May in Deerfield?

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

How many days does it rain in May in Deerfield?

In Deerfield, Massachusetts, in May, during 15.1 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

What is the last month it snows in Deerfield?

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

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

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

What time are sunrise and sunset in May in Deerfield?

On the first day of May in Deerfield, 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 many hours of sunshine does Deerfield have in May?

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

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

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

What is the UV index intensity in May in Deerfield?

In Deerfield, Massachusetts, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Deerfield, MA

Average temperature in May - 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).

[Resources]

Average pressure in May
Deerfield, MA

Average pressure in May - 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).

[Resources]

Average wind speed in May
Deerfield, MA

Average wind speed in May - 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).

[Resources]

Average humidity in May
Deerfield, MA

Average humidity in May - 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%).

[Resources]

Average rainfall in May
Deerfield, MA

Average rainfall in May - 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").

[Resources]

Average rainfall days in May
Deerfield, MA

Average rainfall days in May - 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).

[Resources]

Average snowfall in May
Deerfield, MA

Average snowfall in May - 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").

[Resources]

Average snowfall days in May
Deerfield, MA

Average snowfall days in May - 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).

[Resources]

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

Average daylight in May / Average sunshine in May - Deerfield, 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 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).

[Resources]

Average sunshine days in May
Deerfield, MA

Average sunshine days in May - 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).

[Resources]

Average UV index in May
Deerfield, MA

Average UV index in May - 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).

[Resources]

Average cloud cover in May
Deerfield, MA

Average cloud cover in May - 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).

[Resources]

Average visibility in May
Deerfield, MA

Average visibility in May - 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).

[Resources]

Deerfield, Massachusetts, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location