May weather forecast
Amherst, MA

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Weather in May

The pleasant weather continues into May, characterized by a rise in temperatures and prolonged daylight hours. Sunshine graces the city for approximately 14.6 hours a day, inviting residents outside to enjoy. The city is bustling; parks and trails become filled with people taking advantage of the pleasant conditions. An exhilarating sense of liberation and vitality permeates the air. You can soak in the pleasant sunshine and experience the full force of spring in May.

Temperature

Amherst's transition into May brings a rise in the average high-temperature, moving from 55.6°F (13.1°C) in April to a still refreshing 67.8°F (19.9°C). Throughout May, an average low-temperature of 47.3°F (8.5°C) is experienced.

Humidity

In May, the average relative humidity is 74%.

Rainfall

In Amherst, in May, during 14.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Amherst, during the entire year, the rain falls for 141.3 days and collects up to 27.05" (687mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Amherst aggregates 0.28" (7mm) of snow. In Amherst, during the entire year, snow falls for 38.2 days and aggregates up to 21.42" (544mm) of snow.

Daylight

In Amherst, the average length of the day in May 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 5:15 am and sunset at 8:19 pm EDT.

Sunshine

In Amherst, the average sunshine in May is 8.6h.

UV index

In Amherst, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 5 in May translates into these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

In Amherst, in May, the average high-temperature is 67.8°F (19.9°C), and the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in May?

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

How many days does it rain in May?

In Amherst, Massachusetts, during May, the rain falls for 14.5 days and regularly aggregates up to 2.13" (54mm) of precipitation.

What is the last month it snows?

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

How many hours of daylight does Amherst have in May?

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

When is the sunrise / sunset in May?

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 8:19 pm EDT.

How long on average sun shines in May?

In Amherst, the average sunshine duration in May is 8.6h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Amherst, MA

Average temperature in May - Amherst, MA
  • Average high temperature in May: 67.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 47.3°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 (18.1°F).

Average pressure in May
Amherst, MA

Average pressure in May - Amherst, 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
Amherst, MA

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

The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in May
Amherst, MA

Average humidity in May - Amherst, 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%).

Average rainfall in May
Amherst, MA

Average rainfall in May - Amherst, MA
  • Average rainfall in May: 2.13"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in May
Amherst, MA

Average rainfall days in May - Amherst, MA
  • Average rainfall days in May: 14.5 days

The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in May
Amherst, MA

Average snowfall in May - Amherst, MA
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (6.14").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Amherst, MA

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

The month with the highest number of snowfall days is February (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Amherst, 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 42min).

Average sunshine days in May
Amherst, MA

Average sunshine days in May - Amherst, MA
  • Average sunshine days in May: 15 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is March (13.6 days).

Average UV index in May
Amherst, MA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in May
Amherst, MA

Average cloud cover in May - Amherst, MA
  • Average cloud cover in May: 45

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in May
Amherst, MA

Average visibility in May - Amherst, 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).

Amherst, Massachusetts, USA

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