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
May shows a rise in the average high-temperature, moving from April's fresh 54.3°F (12.4°C) to an enjoyable 66.7°F (19.3°C). The nighttime temperature dips to a chilly 46.6°F (8.1°C) on average during May.Humidity
In Petersham, the average relative humidity in May is 75%.Rainfall
In Petersham, Massachusetts, in May, it is raining for 15.6 days, with typically 2.24" (57mm) of accumulated precipitation. In Petersham, during the entire year, the rain falls for 145 days and collects up to 28.03" (712mm) of precipitation.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. In Petersham, during the entire year, snow falls for 43.1 days and aggregates up to 25.75" (654mm) of snow.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, sunrise is at 5:14 am and sunset at 8:19 pm EDT.
Sunshine
The average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Boost your sun resistance with garments that are densely woven yet spacious. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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 in Petersham?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Petersham have in May?
When is the sunrise / sunset in May in Petersham?
How long on average sun shines in May?
What is the UV index intensity in May?
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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