May weather forecastLebanon, PA
May
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
May brings a temperature change, with average high-temperatures moving from April's refreshing 59.4°F (15.2°C) to an agreeable 68.7°F (20.4°C). May's nights in Lebanon observe an average 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. Throughout the year, there are 137.4 rainfall days, and 16.26" (413mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. 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
In May, the average length of the day 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
The average sunshine in May is 8.2h.UV index
The months with the highest UV index are May through July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 6 during May translates into these guidelines:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in May /
Average sunshine in May
Lebanon, PA
- Average daylight in May: 14h and 24min
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 12min
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).
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).
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).
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).
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).
