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
An increase in the average high-temperature marks May, moving from April's moderate 13.8°C (56.8°F) to a pleasant 20.7°C (69.3°F). Jamestown's average low-temperature for the month of May records at a frosty 9.2°C (48.6°F).Humidity
The months with the lowest humidity are May through July, with an average relative humidity of 79%.Rainfall
In Jamestown, during May, the rain falls for 17.6 days and regularly aggregates up to 58mm (2.28") of precipitation. In Jamestown, during the entire year, the rain falls for 167.1 days and collects up to 616mm (24.25") of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Jamestown aggregates 6mm (0.24") of snow. Throughout the year, there are 79.6 snowfall days, and 635mm (25") of snow is accumulated.Daylight
The average length of the day in May in Jamestown is 14h and 32min.On the first day of May, sunrise is at 6:17 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:48 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In Jamestown, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the least humid month?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows in Jamestown?
How many hours of daylight does Jamestown have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Jamestown, PA
- Average high temperature in May: 20.7°C
The warmest month (with the highest average high temperature) is July (27.1°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in May: 9.2°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-7.7°C).
Average pressure in May
Jamestown, PA
- Average pressure in May: 1015.6mbar
The month with the highest atmospheric pressure is November (1019.8mbar).
The month with the lowest atmospheric pressure is June (1013.8mbar).
Average wind speed in May
Jamestown, PA
- Average wind speed in May: 10.3km/h
The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is July (8.2km/h).
Average humidity in May
Jamestown, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in May
Jamestown, PA
- Average rainfall in May: 58mm
The wettest month (with the highest rainfall) is October (64mm).
The driest month (with the least rainfall) is September (40mm).
Average rainfall days in May
Jamestown, PA
- Average rainfall days in May: 17.6 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8 days).
Average snowfall in May
Jamestown, PA
- Average snowfall in May: 6mm
The month with the highest snowfall is January (162mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Jamestown, PA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (19.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Jamestown, 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 12min).
- Average sunshine in May: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Jamestown, PA
- Average sunshine days in May: 11.2 days
The month with the most sunshine days is August (12.6 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in May
Jamestown, PA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Jamestown, PA
- Average cloud cover in May: 47
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in May
Jamestown, PA
- Average visibility in May: 8km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (8km).
The month with the lowest visibility is February (6km).
Jamestown, Pennsylvania, USA
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