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 start of May brings a subtle shift in the average high-temperature, edging up from April's agreeable 69.3°F (20.7°C) to a warm 77.7°F (25.4°C). Throughout May, Rockville records an average temperature of 56.3°F (13.5°C) at night.Humidity
In Rockville, the average relative humidity in May is 76%.Rainfall
In Rockville, during May, the rain falls for 15.8 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, in Rockville, there are 159.4 rainfall days, and 35.71" (907mm) of precipitation is accumulated.Snowfall
In Rockville, snow does not fall in May through September.Daylight
In May, the average length of the day in Rockville is 14h and 4min.On the first day of May in Rockville, sunrise is at 6:44 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:47 pm EDT.
Sunshine
In Rockville, the average sunshine in May is 10.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Rockville. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 during May leads to these advisories:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Rockville?
What is the average humidity in May in Rockville?
How many days does it rain in May in Rockville?
When it does not snow in Rockville?
Does it snow in Rockville in May?
What is the average length of the day in May in Rockville?
What time are sunrise and sunset in May in Rockville?
How many hours of sunshine does Rockville have in May?
What is the month with the highest UV index in Rockville?
What is the UV index reading in May in Rockville?
Average temperature in May
Rockville, TN
- Average high temperature in May: 77.7°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (45.7°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in May
Rockville, TN
- Average pressure in May: 30.02"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Rockville, TN
- Average wind speed in May: 5.2mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).
Average humidity in May
Rockville, TN
- Average humidity in May: 76%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (74%).
Average rainfall in May
Rockville, TN
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is February (3.9").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Rockville, TN
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in May
Rockville, TN
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Rockville, TN
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rockville, TN
- Average daylight in May: 14h and 1min
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: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in May
Rockville, TN
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in May
Rockville, TN
- Average UV index in May: 6
The months with the highest UV index are May, 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
Rockville, TN
- Average cloud cover in May: 32
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in May
Rockville, 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).
Rockville, Tennessee, USA
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