May weather forecastMarion, MA
May
Weather in May
May, the last month of the spring in Marion, is a moderate month, with an average temperature varying between 60.4°F (15.8°C) and 50.9°F (10.5°C).Temperature
With the onset of May, Marion's weather sees a temperature rise, transitioning from a cool 51.3°F (10.7°C) in April to a mild 60.4°F (15.8°C). In Marion, the nighttime temperature averages to a fresh 50.9°F (10.5°C) during May.Humidity
The average relative humidity in May is 79%.Rainfall
In May, the rain falls for 14.1 days. Throughout May, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 136.3 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Marion aggregates 0.12" (3mm) of snow. In Marion, during the entire year, snow falls for 21.6 days and aggregates up to 4.29" (109mm) of snow.Ocean temperature
In Marion, the average seawater temperature in May is 50.4°F (10.2°C).Note: Swimming in 50.4°F (10.2°C) is deemed hazardous. Exposure to temperatures below 50°F (10°C) leads to immediate severe cold shock and hyperventilation.
Daylight
In May, the average length of the day in Marion is 14h and 33min.On the first day of the month, sunrise is at 5:38 am and sunset at 7:41 pm. On the last day of May, sunrise is at 5:10 am and sunset at 8:10 pm EDT.
Sunshine
In Marion, the average sunshine in May is 8.6h.UV index
In Marion, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 5 during May translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Marion, 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
Marion, 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
Marion, 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
Marion, 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
Marion, 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
Marion, 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
Marion, 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
Marion, 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 sea temperature in May
Marion, MA
- Average sea temperature in May: 50.4°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in May /
Average sunshine in May
Marion, 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 36min
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
Marion, 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
Marion, 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
Marion, 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
Marion, 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).
