April weather forecastHeiskell, TN
April
Weather in April
April in Heiskell, Tennessee, is an agreeable spring month, with an average temperature ranging between max 69.3°F (20.7°C) and min 48°F (8.9°C).Temperature
The shift from March to April sees an increase in the average high-temperature, transitioning from a refreshing 58.1°F (14.5°C) to an agreeable 69.3°F (20.7°C). Heiskell's nighttime temperature in April falls to an average of 48°F (8.9°C).Humidity
The average relative humidity in April is 74%.Rainfall
In Heiskell, during April, the rain falls for 13.8 days and regularly aggregates up to 2.8" (71mm) of precipitation. In Heiskell, during the entire year, the rain falls for 148.9 days and collects up to 29.57" (751mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows in Heiskell, Tennessee. During 0.3 snowfall days, in April, Heiskell aggregates 0.08" (2mm) of snow. Throughout the year, in Heiskell, there are 11.5 snowfall days, and 3.94" (100mm) of snow is accumulated.Daylight
In April, the average length of the day in Heiskell is 13h and 8min.On the first day of April in Heiskell, sunrise is at 7:21 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 8:23 pm EDT.
Sunshine
In April, the average sunshine in Heiskell, Tennessee, is 8.3h.UV index
The average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the UV index of 5 transforms into the following advice:
Be vigilant - A duty to shield skin and eyes from injury exists. When the Sun is at its strongest around midday, find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Consider this! The reflection from 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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
Heiskell, 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).
