May weather forecast
Lebanon, PA

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Weather in May

May brings in the beautiful sunshine and pleasing temperatures, making it an ideal time for outdoor activities in Lebanon, Pennsylvania. Weather conditions prove consistently warmer, with temperatures climbing to a pleasant 68.7°F (20.4°C). While temperatures are on a steady rise, May also sees more rainfall days contributing to the lushness of the local flora. The shift towards summer is evident with extended daylight hours and reduced need for layering clothes. May concludes spring on a high note, bridging the gap between the mild spring and the hot summer that follows.

Temperature

The arrival of May brings a temperature shift, with the average high-temperature escalating from a mild 59.4°F (15.2°C) in April to a pleasant 68.7°F (20.4°C). During the month of May, Lebanon anticipates a mean low-temperature of 51.1°F (10.6°C).

Humidity

The months with the highest humidity are February, May and October, with an average relative humidity of 81%.

Rainfall

In Lebanon, during May, the rain falls for 15.9 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Lebanon, Pennsylvania, during the entire year, the rain falls for 137.4 days and collects up to 16.26" (413mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Lebanon. May is the last month it regularly snows. During 0.2 snowfall days, in May, Lebanon aggregates 0.04" (1mm) of snow. Throughout the year, there are 19.5 snowfall days, and 6.69" (170mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 26min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:01 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:29 pm EDT.

Sunshine

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

UV index

May through July, with an average maximum UV index of 6, are months with the highest UV index in Lebanon. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the usual temperature for Lebanon in May?

The high-temperature, in May, in Lebanon, records 68.7°F (20.4°C), while the low-temperature is 51.1°F (10.6°C).

What is the most humid month in Lebanon?

The months with the highest humidity in Lebanon, Pennsylvania, are February, May and October, with an average relative humidity of 81%.

What is the average humidity in May in Lebanon?

In Lebanon, Pennsylvania, the average relative humidity in May is 81%.

How many days does it rain in May in Lebanon?

In May, in Lebanon, Pennsylvania, the rain falls for 15.9 days. Throughout May, 1.61" (41mm) of precipitation is accumulated.

What is the last month it snows in Lebanon?

May is the last month it regularly snows in Lebanon. During 0.2 snowfall days, in May, Lebanon aggregates 0.04" (1mm) of snow.

What is the average length of the day in May in Lebanon?

In May, the average day length in Lebanon is 14h and 26min.

What time are sunrise and sunset in May in Lebanon?

In May, on the first day of the month, sunrise is at 6:03 am and sunset at 8:01 pm. On the last day of the month, in Lebanon, Pennsylvania, sunrise is at 5:37 am and sunset at 8:29 pm EDT.

How many hours of sunshine does Lebanon have in May?

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

What is the month with the highest UV index in Lebanon?

The months with the highest UV index are May through July, with an average maximum UV index of 6.

What is the UV index reading in May in Lebanon?

The average daily maximum UV index in May in Lebanon is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Lebanon, PA

Average temperature in May - Lebanon, PA
  • Average high temperature in May: 68.7°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in May: 51.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in May
Lebanon, PA

Average pressure in May - Lebanon, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Lebanon, PA

Average wind speed in May - Lebanon, PA
  • Average wind speed in May: 6.6mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in May
Lebanon, PA

Average humidity in May - Lebanon, PA
  • Average humidity in May: 81%

The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in May
Lebanon, PA

Average rainfall in May - Lebanon, PA
  • Average rainfall in May: 1.61"

The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").

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Average rainfall days in May
Lebanon, PA

Average rainfall days in May - Lebanon, PA
  • Average rainfall days in May: 15.9 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in May
Lebanon, PA

Average snowfall in May - Lebanon, PA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Lebanon, PA

Average snowfall days in May - Lebanon, PA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Lebanon, PA

Average daylight in May / Average sunshine in May - Lebanon, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in May
Lebanon, PA

Average sunshine days in May - Lebanon, PA
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in May
Lebanon, PA

Average UV index in May - Lebanon, PA
  • Average UV index in May: 6

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in May
Lebanon, PA

Average cloud cover in May - Lebanon, PA
  • Average cloud cover in May: 48

The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in May
Lebanon, PA

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

The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).

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Lebanon, Pennsylvania, USA

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