Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The shift from April to May is marked by an increase in the average high-temperature, moving from a mild 58.6°F (14.8°C) to an agreeable 70.2°F (21.2°C). May witnesses an average nighttime temperature of 49.3°F (9.6°C).Humidity
In Lewistown, the average relative humidity in May is 79%.Rainfall
The month with the most rainfall in Lewistown is May, when the rain falls for 19.1 days and typically aggregates up to 3.31" (84mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Lewistown aggregates 0.16" (4mm) of snow. Throughout the year, there are 35.2 snowfall days, and 16.42" (417mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 28min.On the first day of May, sunrise is at 6:07 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:34 pm EDT.
Sunshine
The average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during May leads to these instructions:
Make use of precautions - It is urged to ward off sun damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Boost your sun resistance with garments that are densely woven yet spacious. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Lewistown have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Lewistown have in May?
What is the UV index intensity in May?
Average temperature in May
Lewistown, PA
- Average high temperature in May: 70.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in May
Lewistown, 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 (29.95"Hg).
Average wind speed in May
Lewistown, PA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
Lewistown, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).
Average rainfall in May
Lewistown, PA
- Average rainfall in May: 3.31"
The wettest month (with the highest rainfall) is May (3.31").
The driest months (with the least rainfall) are January and November (1.85").
Average rainfall days in May
Lewistown, PA
- Average rainfall days in May: 19.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in May
Lewistown, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lewistown, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lewistown, PA
- Average daylight in May: 14h and 3min
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 18min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Lewistown, PA
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in May
Lewistown, PA
- Average UV index in May: 5
The month with the highest UV index is June (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
Lewistown, PA
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Lewistown, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Lewistown, Pennsylvania, USA
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