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 arrival of May sees a shift in the average high-temperature, moving from a mild 56.8°F (13.8°C) in April to an agreeable 68.9°F (20.5°C). In Rossiter, May nights cool down to an average of 48.4°F (9.1°C).Humidity
In Rossiter, the average relative humidity in May is 79%.Rainfall
In Rossiter, in May, it is raining for 18 days, with typically 2.36" (60mm) of accumulated precipitation. 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 in Rossiter. During 0.6 snowfall days, in May, Rossiter aggregates 0.55" (14mm) of snow. In Rossiter, Pennsylvania, during the entire year, snow falls for 71 days and aggregates up to 22.32" (567mm) of snow.Daylight
In Rossiter, the average length of the day in May is 14h and 29min.On the first day of May in Rossiter, Pennsylvania, sunrise is at 6:12 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:40 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 of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 5 during May translates into the following directions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the usual temperature for Rossiter in May?
What is the average humidity in May in Rossiter?
How much does it rain in Rossiter in May?
What is the last month it snows in Rossiter?
What is the average length of the day in May in Rossiter?
When are sunrise and sunset in May in Rossiter?
How many hours of sunshine does Rossiter have in May?
What is the month with the highest UV index in Rossiter?
What is the UV index reading in May in Rossiter?
Average temperature in May
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, PA
- Average daylight in May: 14h and 3min
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 1min
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
Rossiter, 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
Rossiter, 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
Rossiter, 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
Rossiter, 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).
Rossiter, Pennsylvania, USA
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