May weather forecastSanford, ME
May
Weather in May
May ushers in true spring vibes in Sanford. The weather becomes friendlier, offering a comfortable temperature range for outdoor activities. The extended sunlight hours encourage lush greenery to sprout throughout the city. Rainfall remains a more or less constant companion throughout May, with an average accumulation of around 1.38" (35mm). Days are longer and filled with abundant sunshine, highlighting the city's natural charm.Temperature
The arrival of May signals an increase in the average high-temperature, moving from a fresh 50.5°F (10.3°C) in April to a comfortable 61.3°F (16.3°C). In the month of May, Sanford witnesses a consistent average low-temperature of 46°F (7.8°C).Humidity
The average relative humidity in May is 79%.Rainfall
In Sanford, during May, the rain falls for 12.9 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Sanford, during the entire year, the rain falls for 118.9 days and collects up to 14.61" (371mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Sanford. May is the last month it regularly snows. During 0.1 snowfall days, in May, Sanford aggregates 0.24" (6mm) of snow. Throughout the year, there are 31.7 snowfall days, and 10.51" (267mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 43min.On the first day of the month, sunrise is at 5:34 am and sunset at 7:45 pm. On the last day of May, sunrise is at 5:05 am and sunset at 8:16 pm EDT.
Sunshine
In Sanford, the average sunshine in May is 8.2h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. 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
Average temperature in May
Sanford, ME
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Sanford, ME
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Sanford, ME
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Sanford, ME
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in May
Sanford, ME
- Average rainfall in May: 1.38"
The wettest month (with the highest rainfall) is October (1.54").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in May
Sanford, ME
- Average rainfall days in May: 12.9 days
The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in May
Sanford, ME
- Average snowfall in May: 0.24"
The month with the highest snowfall is December (2.83").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Sanford, ME
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sanford, ME
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in May
Sanford, ME
- Average sunshine days in May: 16.2 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is April (14.2 days).
Average UV index in May
Sanford, ME
- Average UV index in May: 5
The month with the highest UV index is 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
Sanford, ME
- Average cloud cover in May: 46
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Sanford, ME
- 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).





