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
Entering May, Mercer notices a subtle temperature elevation, with the average high-temperature advancing from April's pleasant 69.4°F (20.8°C) to a moderately hot 77.5°F (25.3°C). Mercer observes an average low-temperature of 60.4°F (15.8°C) during May nights.Humidity
In May, the average relative humidity is 79%.Rainfall
In Mercer, Tennessee, in May, it is raining for 12.1 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 125.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Mercer, the average length of the day in May is 14h and 3min.On the first day of May, sunrise is at 6:03 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:05 pm CDT.
Sunshine
The average sunshine in May is 9.5h.UV index
In Mercer, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 6 in May leads to these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Mercer in May?
What is the average humidity in May in Mercer?
How much does it rain in Mercer in May?
When it does not snow in Mercer?
What is the average length of the day in May in Mercer?
When is the sunrise / sunset in May in Mercer?
How many hours of sunshine does Mercer have in May?
What is the UV index reading in May in Mercer?
Average temperature in May
Mercer, TN
- Average high temperature in May: 77.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45.7°F).
- Average low temperature in May: 60.4°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in May
Mercer, TN
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Mercer, TN
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in May
Mercer, TN
- Average humidity in May: 79%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Mercer, TN
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in May
Mercer, TN
- Average rainfall days in May: 12.1 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (7.1 days).
Average snowfall in May
Mercer, TN
- Average snowfall in May: 0"
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Mercer, TN
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Mercer, TN
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Mercer, TN
- Average sunshine days in May: 16.8 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in May
Mercer, TN
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Mercer, TN
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in May
Mercer, TN
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Mercer, Tennessee, USA
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