Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As May arrives, a rise in the average high-temperature is observed, moving from a moderate 56.1°F (13.4°C) in April to a still refreshing 67.8°F (19.9°C). Nighttime temperature dips to a mean of 48.7°F (9.3°C) during May.Humidity
In May, the average relative humidity is 73%.Rainfall
In Littleton, in May, during 15.3 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, there are 140 rainfall days, and 27.09" (688mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Littleton. During 0.1 snowfall days, in May, Littleton aggregates 0.12" (3mm) of snow. Throughout the year, there are 34.1 snowfall days, and 23.58" (599mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 38min.On the first day of the month, sunrise is at 5:39 am and sunset at 7:46 pm. On the last day of May, sunrise is at 5:11 am and sunset at 8:16 pm EDT.
Sunshine
In Littleton, the average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May in Littleton is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Adopt protective measures - It is advised to guard against sun damage. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Enhance your sun protection with tightly woven, yet airy clothing. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Littleton have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Littleton, MA
- Average high temperature in May: 67.8°F
The warmest month (with the highest average high temperature) is July (82.2°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°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in May
Littleton, 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
Littleton, MA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Littleton, MA
- Average humidity in May: 73%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (70%).
Average rainfall in May
Littleton, MA
- Average rainfall in May: 1.97"
The wettest month (with the highest rainfall) is October (2.68").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in May
Littleton, MA
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6.5 days).
Average snowfall in May
Littleton, MA
- Average snowfall in May: 0.12"
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
Littleton, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Littleton, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in May
Littleton, MA
- Average sunshine days in May: 14.2 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (13.7 days).
Average UV index in May
Littleton, 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
Littleton, MA
- Average cloud cover in May: 48
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Littleton, MA
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
Littleton, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location