May weather forecast
Northampton, MA

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Weather in May

May is characterized by warmer climate and fewer clouds, as summer begins to make its presence felt in Northampton. The temperature swings between the mild Zone of 47.5°F (8.6°C) and the quite warm temperature of 67.6°F (19.8°C). May ushers in a sense of excitement as outdoor activities gain momentum. With longer days and increasing sunshine hours, it's a delightful time to explore Northampton. Also, the UV index starts to rise, so don't forget to put on your sunscreen.

Temperature

As May arrives, Northampton's weather shows an increase in high-temperatures, moving from April's fresh 55°F (12.8°C) to a comfortable 67.6°F (19.8°C). An average low-temperature of 47.5°F (8.6°C) is recorded during the nights in May.

Humidity

The average relative humidity in May in Northampton is 74%.

Rainfall

In Northampton, Massachusetts, in May, it is raining for 13.9 days, with typically 1.38" (35mm) of accumulated precipitation. In Northampton, Massachusetts, during the entire year, the rain falls for 134.1 days and collects up to 14.84" (377mm) of precipitation.

Snowfall

Months with snowfall in Northampton are January through May, November and December. May is the last month it regularly snows in Northampton. During 0.1 snowfall days, in May, Northampton aggregates 0.08" (2mm) of snow. In Northampton, Massachusetts, during the entire year, snow falls for 28.6 days and aggregates up to 6.5" (165mm) of snow.

Daylight

The average length of the day in May in Northampton is 14h and 37min.
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 5:16 am and sunset at 8:20 pm EDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

In May, the average daily maximum UV index in Northampton is 5. A UV Index estimate of 3 to 5 represents a moderate health risk 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:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Around midday, solar radiation is most harmful; hence, exposure should be limited. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in May in Northampton?

The average high-temperature and low-temperature during May are 67.6°F (19.8°C) and 47.5°F (8.6°C) respectively.

What is the average humidity in May in Northampton?

In Northampton, the average relative humidity in May is 74%.

How many days does it rain in May in Northampton?

In Northampton, during May, the rain falls for 13.9 days and regularly aggregates up to 1.38" (35mm) of precipitation.

What is the last month it snows in Northampton?

May is the last month it regularly snows in Northampton. During 0.1 snowfall days, in May, Northampton aggregates 0.08" (2mm) of snow.

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

In May, the average day length in Northampton is 14h and 37min.

What time are sunrise and sunset in May in Northampton?

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 5:16 am and sunset at 8:20 pm EDT.

How many hours of sunshine does Northampton have in May?

In May, the average sunshine duration is 8.6h.

What is the UV index intensity in May in Northampton?

The average daily maximum UV index in May in Northampton is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Northampton, MA

Average temperature in May - Northampton, MA
  • Average high temperature in May: 67.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in May: 47.5°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in May
Northampton, MA

Average pressure in May - Northampton, 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
Northampton, MA

Average wind speed in May - Northampton, MA
  • Average wind speed in May: 6.3mph

The windiest months (with the highest average wind speed) are January, February and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in May
Northampton, MA

Average humidity in May - Northampton, MA
  • Average humidity in May: 74%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in May
Northampton, MA

Average rainfall in May - Northampton, MA
  • Average rainfall in May: 1.38"

The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is February (0.91").

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Average rainfall days in May
Northampton, MA

Average rainfall days in May - Northampton, MA
  • Average rainfall days in May: 13.9 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in May
Northampton, MA

Average snowfall in May - Northampton, MA
  • Average snowfall in May: 0.08"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Northampton, MA

Average snowfall days in May - Northampton, MA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (7.7 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
Northampton, MA

Average daylight in May / Average sunshine in May - Northampton, 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 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
Northampton, MA

Average sunshine days in May - Northampton, MA
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in May
Northampton, MA

Average UV index in May - Northampton, MA
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
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
Northampton, MA

Average cloud cover in May - Northampton, 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
Northampton, MA

Average visibility in May - Northampton, MA
  • Average visibility in May: 5mi

The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).

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Northampton, Massachusetts, USA

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