Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
Rock Island's transition into April is marked by a rise in the average high-temperature, advancing from a moderate 57.4°F (14.1°C) in March to a comfortable 67.6°F (19.8°C). The average nighttime temperature in Rock Island, Tennessee, lowers to a frosty 48.4°F (9.1°C) throughout April.Humidity
In Rock Island, Tennessee, the average relative humidity in April is 77%.Rainfall
In Rock Island, during April, the rain falls for 13.8 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Rock Island, during the entire year, the rain falls for 177.3 days and collects up to 31.02" (788mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Rock Island. April is the last month it regularly snows. During 0.2 snowfall days, in April, Rock Island aggregates 0.04" (1mm) of snow. In Rock Island, during the entire year, snow falls for 11 days and aggregates up to 1.61" (41mm) of snow.Daylight
In Rock Island, the average length of the day in April is 13h and 7min.On the first day of April in Rock Island, sunrise is at 6:27 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 7:28 pm CDT.
Sunshine
In Rock Island, Tennessee, the average sunshine in April is 8.9h.UV index
In April, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 5 in April leads to these guidelines:
Guard yourself - Avoiding sunburn is suggested. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Rock Island?
What is the average humidity in April in Rock Island?
How much does it rain in Rock Island in April?
What is the last month it snows in Rock Island?
How many hours of daylight does Rock Island have in April?
When are sunrise and sunset in April in Rock Island?
How long on average sun shines in April in Rock Island?
What is the UV index reading in April in Rock Island?
Average temperature in April
Rock Island, TN
- Average high temperature in April: 67.6°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 April: 48.4°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 April
Rock Island, TN
- Average pressure in April: 30"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 April
Rock Island, TN
- Average wind speed in April: 7.1mph
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 April
Rock Island, TN
- Average humidity in April: 77%
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 April
Rock Island, TN
- Average rainfall in April: 2.91"
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 April
Rock Island, TN
- Average rainfall days in April: 13.8 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 April
Rock Island, TN
- Average snowfall in April: 0.04"
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 April
Rock Island, TN
- Average snowfall days in April: 0.2 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 April /
Average sunshine in April
Rock Island, TN
- Average daylight in April: 13h 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 April: 8h and 5min
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 April
Rock Island, TN
- Average sunshine days in April: 14 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 April
Rock Island, TN
- Average UV index in April: 5
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 April
Rock Island, TN
- Average cloud cover in April: 39
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 April
Rock Island, TN
- Average visibility in April: 6mi
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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