May weather forecastJonesborough, TN
May
Weather in May
May, the last month of the spring in Jonesborough, is a warm month, with an average temperature varying between 52°F (11.1°C) and 73.4°F (23°C).Temperature
Entering May, Jonesborough notices a subtle temperature elevation, with the average high-temperature advancing from April's comfortable 65.3°F (18.5°C) to a moderately hot 73.4°F (23°C). In May, Jonesborough experiences an average nighttime temperature of 52°F (11.1°C).Humidity
The average relative humidity in May is 77%.Rainfall
In May, the rain falls for 18.2 days. Throughout May, 3.03" (77mm) of precipitation is accumulated. In Jonesborough, during the entire year, the rain falls for 175.9 days and collects up to 31.93" (811mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May is 14h and 7min.On the first day of May, sunrise is at 6:35 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:41 pm EDT.
Sunshine
The average sunshine in May is 9.9h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 5 in May translates into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. 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
Average temperature in May
Jonesborough, TN
- Average high temperature in May: 73.4°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in May: 52°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in May
Jonesborough, TN
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in May
Jonesborough, TN
- Average wind speed in May: 5.2mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Jonesborough, TN
- Average humidity in May: 77%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).
Average rainfall in May
Jonesborough, TN
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is February (3.39").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in May
Jonesborough, TN
- Average rainfall days in May: 18.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in May
Jonesborough, TN
- Average snowfall in May: 0"
The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Jonesborough, TN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Jonesborough, TN
- Average daylight in May: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 9h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in May
Jonesborough, TN
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in May
Jonesborough, TN
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Jonesborough, TN
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Jonesborough, TN
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, September and December (5mi).





