May weather forecastOtis, MA
May
Weather in May
The last month of the spring, May, is a comfortable month in Otis, Massachusetts, with an average temperature varying between 65.8°F (18.8°C) and 46.8°F (8.2°C).Temperature
A shift in the average high-temperature is noticeable in May, changing from a cool 53.6°F (12°C) in April to a refreshing 65.8°F (18.8°C). During May, Otis records a consistent average nighttime temperature of 46.8°F (8.2°C).Humidity
The average relative humidity in May is 77%.Rainfall
In Otis, in May, during 18.1 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. Throughout the year, there are 166.5 rainfall days, and 36.97" (939mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Otis. May is the last month it regularly snows. During 0.6 snowfall days, in May, Otis aggregates 0.24" (6mm) of snow. Throughout the year, there are 61.5 snowfall days, and 38.74" (984mm) of snow is accumulated.Daylight
In Otis, the average length of the day in May is 14h and 36min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:21 pm EDT.
Sunshine
In Otis, the average sunshine in May is 8.1h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. To protect against the Sun's most potent rays, avoid direct exposure around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Otis, MA
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in May: 46.8°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in May
Otis, MA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Otis, MA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Otis, MA
- Average humidity in May: 77%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Otis, MA
- Average rainfall in May: 3.27"
The wettest month (with the highest rainfall) is December (3.62").
The driest month (with the least rainfall) is September (2.52").
Average rainfall days in May
Otis, MA
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in May
Otis, MA
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (9.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Otis, MA
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Otis, MA
- Average daylight in May: 14h and 36min
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 12min).
- Average sunshine in May: 8h and 6min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in May
Otis, MA
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (14.8 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in May
Otis, MA
- Average UV index in May: 4
The months with the highest UV index are 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).
Average cloud cover in May
Otis, MA
- Average cloud cover in May: 50
The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in May
Otis, MA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).





