May weather forecast
Lebanon, ME

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Weather in May

May, the last month of the spring in Lebanon, is an enjoyable month, with an average temperature varying between 46°F (7.8°C) and 61.3°F (16.3°C).

Temperature

Lebanon's May weather shows an increase in high-temperatures, moving from April's cool 50.5°F (10.3°C) to a refreshing 61.3°F (16.3°C). Lebanon, during May nights, observes an average temperature of 46°F (7.8°C).

Humidity

In Lebanon, Maine, the average relative humidity in May is 79%.

Rainfall

In Lebanon, during May, the rain falls for 12.9 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Lebanon, during the entire year, the rain falls for 118.9 days and collects up to 14.61" (371mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Lebanon 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 5:35 am and sunset at 7:46 pm. On the last day of May, sunrise is at 5:05 am and sunset at 8:17 pm EDT.

Sunshine

In Lebanon, the average sunshine in May is 8.2h.

UV index

In Lebanon, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

The average high-temperature, in May, in Lebanon, is 61.3°F (16.3°C), while the average low-temperature is 46°F (7.8°C).

What is the average humidity in May in Lebanon?

In May, the average relative humidity is 79%.

How much does it rain in May?

In Lebanon, in May, during 12.9 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Lebanon aggregates 0.24" (6mm) of snow.

What is the average length of the day in May?

The average day length in May in Lebanon is 14h and 43min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:35 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:05 am and sunset at 8:17 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.2h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Lebanon, ME

Average temperature in May - Lebanon, 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
Lebanon, ME

Average pressure in May - Lebanon, 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
Lebanon, ME

Average wind speed in May - Lebanon, 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
Lebanon, ME

Average humidity in May - Lebanon, 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
Lebanon, ME

Average rainfall in May - Lebanon, 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
Lebanon, ME

Average rainfall days in May - Lebanon, 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
Lebanon, ME

Average snowfall in May - Lebanon, 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
Lebanon, ME

Average snowfall days in May - Lebanon, 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
Lebanon, ME

Average daylight in May / Average sunshine in May - Lebanon, ME
  • Average daylight in May: 14h and 4min

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 1min

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
Lebanon, ME

Average sunshine days in May - Lebanon, 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
Lebanon, ME

Average UV index in May - Lebanon, 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
Lebanon, ME

Average cloud cover in May - Lebanon, 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
Lebanon, ME

Average visibility in May - Lebanon, 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).

Lebanon, Maine, USA

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