May weather forecastDayton, PA
May
Weather in May
The last month of the spring, May, is an agreeable month in Dayton, Pennsylvania, with an average temperature fluctuating between 48.4°F (9.1°C) and 68.9°F (20.5°C).Temperature
May's arrival brings a change in high-temperatures, moving from a refreshing 56.8°F (13.8°C) in April to a pleasant 68.9°F (20.5°C). Dayton's temperature drops to an average low of 48.4°F (9.1°C) during the nights of May.Humidity
In Dayton, the average relative humidity in May is 79%.Rainfall
In May, in Dayton, the rain falls for 18 days. Throughout May, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 151.9 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.6 snowfall days, in May, Dayton aggregates 0.55" (14mm) of snow. In Dayton, Pennsylvania, during the entire year, snow falls for 71 days and aggregates up to 22.32" (567mm) of snow.Daylight
The average length of the day in May is 14h and 29min.On the first day of May, sunrise is at 6:14 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:42 pm EDT.
Sunshine
The average sunshine in May is 8.1h.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 exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Dayton, PA
- Average high temperature in May: 68.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in May: 48.4°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Dayton, PA
- Average pressure in May: 30"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
Dayton, PA
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in May
Dayton, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in May
Dayton, PA
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in May
Dayton, PA
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in May
Dayton, PA
- Average snowfall in May: 0.55"
The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Dayton, PA
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Dayton, 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 6min
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: 2h and 30min).
Average sunshine days in May
Dayton, PA
- Average sunshine days in May: 10.7 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in May
Dayton, PA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Dayton, PA
- Average cloud cover in May: 50
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in May
Dayton, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
