May weather forecastJohnson City, TN
May
Weather in May
May observes Johnson City immersed in the vibrant energy of spring, with the surroundings teeming with life and color. The city observes a steady increase in temperature and humidity, reinforcing the presence of the spring season. Rainfall events are frequent, resulting in fresh and lush foliage, painting the town in varying shades of green. The wind mellows out, adding a touch of tranquility to the beautiful May weather. With 14.1 hours of daylight, May offers ample sunshine, ideal for exploring the landscapes and attractions of Johnson City.Temperature
May comes with a subtle rise, with the average high-temperature adjusting from a comfortable 64.9°F (18.3°C) in April to a warm 73.4°F (23°C). Johnson City encounters a significant temperature differential, with an average low-temperature of 51.8°F (11°C) during May nights.Humidity
The average relative humidity in May is 78%.Rainfall
In Johnson City, in May, it is raining for 19.4 days, with typically 3.07" (78mm) of accumulated precipitation. In Johnson City, Tennessee, during the entire year, the rain falls for 187.8 days and collects up to 32.76" (832mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 7min.On the first day of the month, sunrise is at 6:35 am and sunset at 8:17 pm. On the last day of May, sunrise is at 6:13 am and sunset at 8:41 pm EDT.
Sunshine
The average sunshine in May in Johnson City is 9.9h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Johnson City, 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 (41.5°F).
- Average low temperature in May: 51.8°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in May
Johnson City, 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
Johnson City, 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
Johnson City, TN
- Average humidity in May: 78%
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
Johnson City, TN
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is February (3.27").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
Johnson City, TN
- Average rainfall days in May: 19.4 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in May
Johnson City, 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
Johnson City, TN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Johnson City, 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: 5h and 0min).
Average sunshine days in May
Johnson City, TN
- Average sunshine days in May: 9.2 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in May
Johnson City, 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
Johnson City, TN
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 31).
Average visibility in May
Johnson City, TN
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, October and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September and December (5mi).
