May weather forecast
Lebanon, NH

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Weather in May

May sees further continuation of the spring season in Lebanon, with milder weather settling in. The drop of snowfall to a barely traceable 0.43" (11mm) confirms the winter's conclusion. Longer daylight hours grace the city, warming the atmosphere and helping the vegetation to flourish. Intermittent rainfall helps maintain the lushness of the landscape making this month ideal for outdoor ventures. As the city embraces spring fully, residents and visitors enjoy a myriad of outdoor activities.

Temperature

May brings with it a considerable temperature increase, with average high-temperatures rising from April's fresh 50.4°F (10.2°C) to a comfortable 64.9°F (18.3°C). Lebanon cools down to an average low-temperature of 43.9°F (6.6°C) throughout the month of May.

Humidity

The least humid month is May, with an average relative humidity of 75%.

Rainfall

In May, the rain falls for 16.3 days. Throughout May, 2.28" (58mm) of precipitation is accumulated. In Lebanon, during the entire year, the rain falls for 156.4 days and collects up to 26.14" (664mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Lebanon. May is the last month it regularly snows. During 0.6 snowfall days, in May, Lebanon aggregates 0.43" (11mm) of snow. In Lebanon, during the entire year, snow falls for 74.2 days and aggregates up to 35.67" (906mm) of snow.

Daylight

In Lebanon, the average length of the day in May is 14h and 44min.
On the first day of May, sunrise is at 5:40 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:23 pm EDT.

Sunshine

In May, the average sunshine is 8.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 5 during May translates into the following directions:
Take precautions - Protection against sun damage is advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

During May, Lebanon experiences an average high-temperature of 64.9°F (18.3°C) and a low-temperature of 43.9°F (6.6°C).

What is the least humid month in Lebanon?

With an average relative humidity of 75%, May is the least humid month.

What is the average humidity in May?

In May, the average relative humidity is 75%.

How many days does it rain in May?

In Lebanon, in May, it is raining for 16.3 days, with typically 2.28" (58mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.6 snowfall days, in May, Lebanon aggregates 0.43" (11mm) of snow.

How many hours of daylight does Lebanon have in May?

In Lebanon, the average day length in May is 14h and 44min.

When is the sunrise / sunset in May in Lebanon?

On the first day of May, sunrise is at 5:40 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:23 pm EDT.

How many hours of sunshine does Lebanon have in May?

In May, the average sunshine duration is 8.2h.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index reading in May in Lebanon?

In Lebanon, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk 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, NH

Average temperature in May - Lebanon, NH
  • Average high temperature in May: 64.9°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in May: 43.9°F

The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in May
Lebanon, NH

Average pressure in May - Lebanon, NH
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Lebanon, NH

Average wind speed in May - Lebanon, NH
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in May
Lebanon, NH

Average humidity in May - Lebanon, NH
  • Average humidity in May: 75%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (75%).

Average rainfall in May
Lebanon, NH

Average rainfall in May - Lebanon, NH
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is October (2.87").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in May
Lebanon, NH

Average rainfall days in May - Lebanon, NH
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in May
Lebanon, NH

Average snowfall in May - Lebanon, NH
  • Average snowfall in May: 0.43"

The month with the highest snowfall is February (9.29").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Lebanon, NH

Average snowfall days in May - Lebanon, NH
  • Average snowfall days in May: 0.6 days

The month with the highest number of snowfall days is January (16.3 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, NH

Average daylight in May / Average sunshine in May - Lebanon, NH
  • 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 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

Average sunshine days in May
Lebanon, NH

Average sunshine days in May - Lebanon, NH
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is March (9.7 days).

Average UV index in May
Lebanon, NH

Average UV index in May - Lebanon, NH
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

Average cloud cover in May
Lebanon, NH

Average cloud cover in May - Lebanon, NH
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in May
Lebanon, NH

Average visibility in May - Lebanon, NH
  • Average visibility in May: 5mi

The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).

Lebanon, New Hampshire, USA

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