May weather forecastWilliamsport, PA
May
Weather in May
May introduces Williamsport to warmer temperatures, signifying the approaching summer. With average high temperatures reaching a comfortable 68.4°F (20.2°C), the outdoor scene starts bustling with people. Clouds get sparser, setting the stage for about 8.3 hours of sunshine on an average day. The increasing warmth triggers more precipitation, with rainfall reaching nearly 1.85" (47mm). A gentle breeze fills the air, making May a popular month for outdoor festivals and activities in the city.Temperature
As Williamsport enters May, the average high-temperature increases from the a mild 56.5°F (13.6°C) of April to a pleasant 68.4°F (20.2°C). During the month of May, an average low-temperature of 48°F (8.9°C) is recorded.Humidity
The average relative humidity in May is 79%.Rainfall
In Williamsport, during May, the rain falls for 16.6 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Williamsport, during the entire year, the rain falls for 145.2 days and collects up to 16.57" (421mm) of precipitation.Snowfall
In Williamsport, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 31min.On the first day of the month, sunrise is at 6:04 am and sunset at 8:05 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:34 pm EDT.
Sunshine
The average sunshine in May is 8.3h.UV index
In Williamsport, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Williamsport, PA
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Williamsport, 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
Williamsport, PA
- Average wind speed in May: 6.2mph
The windiest months (with the highest average wind speed) are January, March and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Williamsport, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in May
Williamsport, PA
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is April (1.93").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in May
Williamsport, PA
- Average rainfall days in May: 16.6 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in May
Williamsport, PA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Williamsport, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Williamsport, PA
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).
Average sunshine days in May
Williamsport, PA
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in May
Williamsport, PA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Williamsport, PA
- Average cloud cover in May: 49
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in May
Williamsport, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is September (4mi).
