May weather forecast
Carlisle, MA

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Weather in May

The last month of the spring, May, is an enjoyable month in Carlisle, Massachusetts, with an average temperature fluctuating between 67.5°F (19.7°C) and 48.7°F (9.3°C).

Temperature

Carlisle experiences a temperature shift with the start of May, with average high-temperatures moving from a mild 55.9°F (13.3°C) in April to a still refreshing 67.5°F (19.7°C). Carlisle observes an average low-temperature of 48.7°F (9.3°C) during May.

Humidity

The average relative humidity in May is 72%.

Rainfall

In Carlisle, in May, during 12.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 116.3 rainfall days, and 15.87" (403mm) of precipitation is accumulated.

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, Carlisle aggregates 0.04" (1mm) of snow. In Carlisle, during the entire year, snow falls for 25.5 days and aggregates up to 11.42" (290mm) of snow.

Daylight

The average length of the day in May in Carlisle is 14h and 38min.
On the first day of the month, sunrise is at 5:39 am and sunset at 7:45 pm. On the last day of May, sunrise is at 5:10 am and sunset at 8:15 pm EDT.

Sunshine

In Carlisle, the average sunshine in May is 8.3h.

UV index

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 5 during May translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

Carlisle in May has an average high-temperature of 67.5°F (19.7°C) and an average low-temperature of 48.7°F (9.3°C).

What is the average humidity in May?

In Carlisle, the average relative humidity in May is 72%.

How many days does it rain in May?

In Carlisle, in May, during 12.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Carlisle aggregates 0.04" (1mm) of snow.

What is the average length of the day in May?

The average day length in May is 14h and 38min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 5:39 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:15 pm EDT.

How long on average sun shines in May in Carlisle?

The average sunshine duration in May in Carlisle is 8.3h.

What is the UV index reading in May?

In Carlisle, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
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
Carlisle, MA

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

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in May
Carlisle, MA

Average pressure in May - Carlisle, MA
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Carlisle, MA

Average wind speed in May - Carlisle, MA
  • Average wind speed in May: 6.7mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in May
Carlisle, MA

Average humidity in May - Carlisle, MA
  • Average humidity in May: 72%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

Average rainfall in May
Carlisle, MA

Average rainfall in May - Carlisle, MA
  • Average rainfall in May: 1.22"

The wettest month (with the highest rainfall) is October (1.65").
The driest month (with the least rainfall) is September (0.79").

Average rainfall days in May
Carlisle, MA

Average rainfall days in May - Carlisle, MA
  • Average rainfall days in May: 12.8 days

The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is February (5.4 days).

Average snowfall in May
Carlisle, MA

Average snowfall in May - Carlisle, MA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (2.87").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Carlisle, MA

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

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Carlisle, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in May
Carlisle, MA

Average sunshine days in May - Carlisle, MA
  • Average sunshine days in May: 16.4 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is April (15.8 days).

Average UV index in May
Carlisle, MA

Average UV index in May - Carlisle, 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, November and December (UV index 2).

Average cloud cover in May
Carlisle, MA

Average cloud cover in May - Carlisle, MA
  • Average cloud cover in May: 47

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Carlisle, MA

Average visibility in May - Carlisle, MA
  • Average visibility in May: 6mi

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

Carlisle, Massachusetts, USA

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