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
In Petersham, the onset of May comes with an increased average high-temperature, moving from April's cool 54.3°F (12.4°C) to a refreshing 66.7°F (19.3°C). The temperature lowers to an average of 46.6°F (8.1°C) during May nights.Humidity
In Petersham, the average relative humidity in May is 75%.Rainfall
In Petersham, in May, during 15.6 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, in Petersham, there are 145 rainfall days, and 28.03" (712mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Petersham. During 0.1 snowfall days, in May, Petersham aggregates 0.35" (9mm) of snow. Throughout the year, in Petersham, there are 43.1 snowfall days, and 25.75" (654mm) of snow is accumulated.Daylight
In Petersham, the average length of the day in May is 14h and 38min.On the first day of the month, sunrise is at 5:42 am and sunset at 7:49 pm. On the last day of May, in Petersham, Massachusetts, sunrise is at 5:14 am and sunset at 8:19 pm EDT.
Sunshine
The average sunshine in May in Petersham is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Take precautions - Protection against sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the average May temperature in Petersham?
What is the average humidity in May in Petersham?
How many days does it rain in May in Petersham?
What is the last month it snows in Petersham?
How many hours of daylight does Petersham have in May?
What time are sunrise and sunset in May in Petersham?
How long on average sun shines in May in Petersham?
How high is the UV index in May in Petersham?
Average temperature in May
Petersham, MA
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in May
Petersham, 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
Petersham, MA
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in May
Petersham, MA
- Average humidity in May: 75%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Petersham, MA
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
Petersham, MA
- Average rainfall days in May: 15.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in May
Petersham, MA
- Average snowfall in May: 0.35"
The month with the highest snowfall is February (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Petersham, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Petersham, 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 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
Petersham, MA
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (13 days).
Average UV index in May
Petersham, MA
- Average UV index in May: 5
The month with the highest UV index is July (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
Petersham, MA
- Average cloud cover in May: 47
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Petersham, 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).
Petersham, Massachusetts, USA
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