May weather forecastLewis Mills, PA
May
Weather in May
May, the last month of the spring in Lewis Mills, is an agreeable month, with an average temperature varying between 70.9°F (21.6°C) and 52.3°F (11.3°C).Temperature
Lewis Mills's weather in May shows a rise in the average high-temperature, moving up from April's refreshing 60.3°F (15.7°C) to a pleasant 70.9°F (21.6°C). The mean low-temperature during May nights is a fresh 52.3°F (11.3°C).Humidity
February, May and October, with an average relative humidity of 80%, are the most humid months in Lewis Mills.Rainfall
In May, in Lewis Mills, the rain falls for 16.8 days. Throughout May, 2.6" (66mm) of precipitation is accumulated. In Lewis Mills, during the entire year, the rain falls for 145.6 days and collects up to 26.81" (681mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Lewis Mills. During 0.1 snowfall days, in May, Lewis Mills aggregates 0.12" (3mm) of snow. In Lewis Mills, during the entire year, snow falls for 17.2 days and aggregates up to 10.47" (266mm) of snow.Daylight
In Lewis Mills, the average length of the day in May is 14h and 25min.On the first day of May, sunrise is at 6:02 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:26 pm EDT.
Sunshine
In Lewis Mills, Pennsylvania, the average sunshine in May is 8.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Lewis Mills. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 6 during May leads to these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lewis Mills, PA
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in May
Lewis Mills, 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
Lewis Mills, PA
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Lewis Mills, PA
- Average humidity in May: 80%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Lewis Mills, PA
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in May
Lewis Mills, PA
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in May
Lewis Mills, PA
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lewis Mills, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lewis Mills, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Lewis Mills, PA
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in May
Lewis Mills, PA
- Average UV index in May: 6
The months with the highest UV index are May, June, July and 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
Lewis Mills, PA
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Lewis Mills, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).





