May weather forecastCasselman, PA
May
Weather in May
The last month of the spring, May, is a refreshing month in Casselman, Pennsylvania, with an average temperature varying between 67.6°F (19.8°C) and 48.7°F (9.3°C).Temperature
May's arrival is marked by an increase in the average high-temperature, moving from 56.8°F (13.8°C) in April to a still refreshing 67.6°F (19.8°C). In May, the average low-temperature records at a chilly 48.7°F (9.3°C) during the nights.Humidity
In Casselman, the average relative humidity in May is 81%.Rainfall
May is the month with the most rainfall. Rain falls for 22.8 days and accumulates 3.94" (100mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.7 snowfall days, in May, Casselman aggregates 0.35" (9mm) of snow. Throughout the year, there are 68.3 snowfall days, and 33.39" (848mm) of snow is accumulated.Daylight
In Casselman, the average length of the day in May is 14h and 24min.On the first day of May, sunrise is at 6:15 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:38 pm EDT.
Sunshine
In Casselman, the average sunshine in May is 8.2h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a regular UV index of 5 translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Casselman, PA
- Average high temperature in May: 67.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Casselman, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Casselman, PA
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Casselman, PA
- Average humidity in May: 81%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June and July (79%).
Average rainfall in May
Casselman, PA
- Average rainfall in May: 3.94"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in May
Casselman, PA
- Average rainfall days in May: 22.8 days
The month with the highest number of rainy days is May (22.8 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in May
Casselman, PA
- Average snowfall in May: 0.35"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Casselman, PA
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Casselman, 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 months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Casselman, PA
- Average sunshine days in May: 6.2 days
The months with the most sunshine days are October and November (12.5 days).
The month with the least sunshine days is May (6.2 days).
Average UV index in May
Casselman, PA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Casselman, PA
- Average cloud cover in May: 51
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in May
Casselman, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
