May weather forecastSouth Thomaston, ME
May
Weather in May
The last month of the spring, May, is a fresh month in South Thomaston, Maine, with an average temperature fluctuating between 46.2°F (7.9°C) and 54.1°F (12.3°C).Temperature
The onset of May brings a minor temperature shift, with the average high-temperature moving from a chilly 45.9°F (7.7°C) in April to a cool 54.1°F (12.3°C). May nights cool to an average low-temperature of 46.2°F (7.9°C), a marginal decrease from its daytime equivalent.Humidity
In May, the average relative humidity is 83%.Rainfall
In South Thomaston, Maine, in May, during 15.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In South Thomaston, during the entire year, the rain falls for 144.8 days and collects up to 30.63" (778mm) of precipitation.Snowfall
In South Thomaston, snow does not fall in May through October.Ocean temperature
In South Thomaston, the average seawater temperature in May is 45.1°F (7.3°C).Note: While a brief time in 45.1°F (7.3°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
In South Thomaston, Maine, the average length of the day in May is 14h and 47min.On the first day of May, sunrise is at 5:26 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 4:56 am and sunset at 8:12 pm EDT.
Sunshine
In South Thomaston, the average sunshine in May is 8.1h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. It's recommended to limit sun exposure when its radiation is at its peak during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
South Thomaston, ME
- Average high temperature in May: 54.1°F
The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in May: 46.2°F
The month with the highest average low temperature is August (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in May
South Thomaston, ME
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
South Thomaston, ME
- Average wind speed in May: 10mph
The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).
Average humidity in May
South Thomaston, ME
- Average humidity in May: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (75%).
Average rainfall in May
South Thomaston, ME
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in May
South Thomaston, ME
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in May
South Thomaston, ME
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
South Thomaston, ME
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
South Thomaston, ME
- Average sea temperature in May: 45.1°F
The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).
Average daylight in May /
Average sunshine in May
South Thomaston, ME
- Average daylight in May: 14h and 48min
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 6min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in May
South Thomaston, ME
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in May
South Thomaston, ME
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
South Thomaston, ME
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
South Thomaston, 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).
