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 onset of May introduces a subtle rise in the average high-temperature, nudging from an enjoyable 67.6°F (19.8°C) in April to a moderately hot 76.1°F (24.5°C). The average temperature during May nights is registered at a moderate 56.3°F (13.5°C).Humidity
The average relative humidity in May is 79%.Rainfall
In May, the rain falls for 18.5 days. Throughout May, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 177.3 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
In Rock Island, snow does not fall in May through October.Daylight
In Rock Island, Tennessee, the average length of the day in May is 14h and 4min.On the first day of the month, sunrise is at 5:49 am and sunset at 7:29 pm. On the last day of May, in Rock Island, Tennessee, sunrise is at 5:27 am and sunset at 7:52 pm CDT.
Sunshine
In May, the average sunshine is 9.4h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Rock Island. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 6 in May transforms into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Rock Island in May?
What is the average humidity in May in Rock Island?
How many days does it rain in May in Rock Island?
When it does not snow in Rock Island?
Does it snow in Rock Island in May?
How many hours of daylight does Rock Island have in May?
What time are sunrise and sunset in May in Rock Island?
How many hours of sunshine does Rock Island have in May?
What are the months with the highest UV index in Rock Island?
What is the UV index intensity in May in Rock Island?
Average temperature in May
Rock Island, TN
- Average high temperature in May: 76.1°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (44.2°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 (29.8°F).
Average pressure in May
Rock Island, TN
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Rock Island, TN
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Rock Island, TN
- Average humidity in May: 79%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in May
Rock Island, TN
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in May
Rock Island, TN
- Average rainfall days in May: 18.5 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in May
Rock Island, TN
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Rock Island, TN
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.6 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
Rock Island, 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: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in May
Rock Island, TN
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in May
Rock Island, 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 and December (UV index 2).
Average cloud cover in May
Rock Island, TN
- Average cloud cover in May: 38
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in May
Rock Island, TN
- Average visibility in May: 5mi
The months with the highest visibility are February, April, June, October and November (6mi).
The months with the lowest visibility are January, March, May, July, August, September and December (5mi).
Rock Island, Tennessee, USA
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