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
The onset of May marks an increase in the average high-temperature, moving from a cool 51.3°F (10.7°C) in April to a moderate 60.4°F (15.8°C). The average temperature in Rochester drops to a cool 50.9°F (10.5°C) during the night in the month of May.Humidity
In May, the average relative humidity is 79%.Rainfall
In Rochester, Massachusetts, in May, during 14.1 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, in Rochester, there are 136.3 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
Months with snowfall in Rochester are January through May, October through December. May is the last month it regularly snows in Rochester, Massachusetts. During 0.1 snowfall days, in May, Rochester aggregates 0.12" (3mm) of snow. Throughout the year, in Rochester, there are 21.6 snowfall days, and 4.29" (109mm) of snow is accumulated.Daylight
In Rochester, the average length of the day in May is 14h and 34min.On the first day of the month, sunrise is at 5:38 am and sunset at 7:42 pm. On the last day of May, in Rochester, sunrise is at 5:11 am and sunset at 8:11 pm EDT.
Sunshine
In Rochester, the average sunshine in May is 8.6h.UV index
In Rochester, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Be vigilant - Preventing sunburn is recommended. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What is the average May temperature in Rochester?
What is the average humidity in May in Rochester?
How many days does it rain in May in Rochester?
What is the last month it snows in Rochester?
What is the average length of the day in May in Rochester?
What time are sunrise and sunset in May in Rochester?
How many hours of sunshine does Rochester have in May?
How high is the UV index in May in Rochester?
Average temperature in May
Rochester, MA
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in May: 50.9°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in May
Rochester, MA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Rochester, MA
- Average wind speed in May: 9.8mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in May
Rochester, MA
- Average humidity in May: 79%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in May
Rochester, MA
- Average rainfall in May: 1.3"
The wettest month (with the highest rainfall) is October (1.89").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in May
Rochester, MA
- Average rainfall days in May: 14.1 days
The months with the highest number of rainy days are May and July (14.1 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in May
Rochester, MA
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Rochester, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rochester, 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 12min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Rochester, MA
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is December (17.7 days).
The month with the least sunshine days is April (14.3 days).
Average UV index in May
Rochester, 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
Rochester, MA
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Rochester, MA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Rochester, Massachusetts, USA
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