April weather forecastKnoxville, TN
April
Weather in April
By the time April rolls around, winter is a distant memory in Knoxville. The month exhibits considerably warmer temperatures than March, with average high temperatures surpassing the 69.3°F (20.7°C) mark, indicating definite springtime warmth. There's a noticeable increase in daylight hours, drawing residents outdoors to engage in a variety of activities. Relatively low humidity and increased visibility also categorise April weather. Knoxville in April is a month of pleasant weather, perfect for outdoor adventures and exploring city attractions.Temperature
With the onset of April, Knoxville's weather sees a temperature rise, transitioning from a mild 58.1°F (14.5°C) in March to an agreeable 69.3°F (20.7°C). During the month of April, Knoxville anticipates a mean low-temperature of 48°F (8.9°C).Humidity
The average relative humidity in April in Knoxville, Tennessee, is 74%.Rainfall
In Knoxville, in April, it is raining for 13.8 days, with typically 2.8" (71mm) of accumulated precipitation. In Knoxville, during the entire year, the rain falls for 148.9 days and collects up to 29.57" (751mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows in Knoxville. During 0.3 snowfall days, in April, Knoxville aggregates 0.08" (2mm) of snow. Throughout the year, there are 11.5 snowfall days, and 3.94" (100mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 8min.On the first day of April in Knoxville, sunrise is at 7:20 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 8:22 pm EDT.
Sunshine
In Knoxville, the average sunshine in April is 8.3h.UV index
In Knoxville, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In April, the maximum UV index of 5 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Knoxville, TN
- Average high temperature in April: 69.3°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in April: 48°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in April
Knoxville, TN
- Average pressure in April: 30"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 April
Knoxville, TN
- Average wind speed in April: 6mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in April
Knoxville, TN
- Average humidity in April: 74%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is August (70%).
Average rainfall in April
Knoxville, TN
- Average rainfall in April: 2.8"
The wettest month (with the highest rainfall) is February (3.66").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in April
Knoxville, TN
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in April
Knoxville, TN
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Knoxville, TN
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Knoxville, TN
- Average daylight in April: 13h 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 48min).
- Average sunshine in April: 8h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in April
Knoxville, TN
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in April
Knoxville, 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, February and December (UV index 2).
Average cloud cover in April
Knoxville, TN
- Average cloud cover in April: 38
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in April
Knoxville, TN
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
