April weather forecast
Westlyn, TN

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Weather in April

April in Westlyn, Tennessee, is a pleasant spring month, with an average temperature fluctuating between 48.2°F (9°C) and 69.1°F (20.6°C).

Temperature

With the onset of April, Westlyn experiences a temperature shift, with the average high-temperature moving from a mild 58.1°F (14.5°C) in March to a pleasant 69.1°F (20.6°C). An average low-temperature of 48.2°F (9°C) is expected in Westlyn during April.

Humidity

The average relative humidity in April in Westlyn, Tennessee, is 76%.

Rainfall

In April, the rain falls for 15.4 days. Throughout April, 3.78" (96mm) of precipitation is accumulated. In Westlyn, during the entire year, the rain falls for 177.6 days and collects up to 37.91" (963mm) of precipitation.

Snowfall

Months with snowfall in Westlyn, Tennessee, are January through April, October through December. April is the last month it regularly snows in Westlyn, Tennessee. During 0.3 snowfall days, in April, Westlyn aggregates 0.16" (4mm) of snow. Throughout the year, in Westlyn, Tennessee, there are 19 snowfall days, and 5.59" (142mm) of snow is accumulated.

Daylight

In Westlyn, the average length of the day in April is 13h and 8min.
On the first day of the month, sunrise is at 7:21 am and sunset at 7:58 pm. On the last day of April, in Westlyn, sunrise is at 6:43 am and sunset at 8:22 pm EDT.

Sunshine

In Westlyn, the average sunshine in April is 8.5h.

UV index

The average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: In April, the maximum UV index of 5 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What are April temperatures in Westlyn?

In Westlyn, 69.1°F (20.6°C) is the average high-temperature and 48.2°F (9°C) is the average low-temperature during April.

What is the average humidity in April in Westlyn?

In April, the average relative humidity is 76%.

How much does it rain in Westlyn in April?

In Westlyn, in April, it is raining for 15.4 days, with typically 3.78" (96mm) of accumulated precipitation.

What is the last month it snows in Westlyn?

April is the last month it regularly snows in Westlyn, Tennessee. During 0.3 snowfall days, in April, Westlyn aggregates 0.16" (4mm) of snow.

What is the average length of the day in April in Westlyn?

In April, the average day length is 13h and 8min.

When is the sunrise / sunset in April in Westlyn?

In April, on the first day of the month, sunrise is at 7:21 am and sunset at 7:58 pm. On the last day of the month, in Westlyn, Tennessee, sunrise is at 6:43 am and sunset at 8:22 pm EDT.

How long on average sun shines in April in Westlyn?

In April, the average sunshine duration in Westlyn is 8.5h.

What is the UV index intensity in April in Westlyn?

In Westlyn, Tennessee, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Westlyn, TN

Average temperature in April - Westlyn, TN
  • Average high temperature in April: 69.1°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in April: 48.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

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Average pressure in April
Westlyn, TN

Average pressure in April - Westlyn, 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).

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Average wind speed in April
Westlyn, TN

Average wind speed in April - Westlyn, 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 (3.6mph).

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Average humidity in April
Westlyn, TN

Average humidity in April - Westlyn, TN
  • Average humidity in April: 76%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).

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Average rainfall in April
Westlyn, TN

Average rainfall in April - Westlyn, TN
  • Average rainfall in April: 3.78"

The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in April
Westlyn, TN

Average rainfall days in April - Westlyn, TN
  • Average rainfall days in April: 15.4 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (10.3 days).

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Average snowfall in April
Westlyn, TN

Average snowfall in April - Westlyn, TN
  • Average snowfall in April: 0.16"

The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Westlyn, TN

Average snowfall days in April - Westlyn, TN
  • Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Westlyn, TN

Average daylight in April / Average sunshine in April - Westlyn, TN
  • Average daylight in April: 13h and 1min

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 3min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in April
Westlyn, TN

Average sunshine days in April - Westlyn, TN
  • Average sunshine days in April: 12.6 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is July (10.3 days).

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Average UV index in April
Westlyn, TN

Average UV index in April - Westlyn, 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).

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Average cloud cover in April
Westlyn, TN

Average cloud cover in April - Westlyn, TN
  • Average cloud cover in April: 37

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).

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Average visibility in April
Westlyn, TN

Average visibility in April - Westlyn, TN
  • Average visibility in April: 6mi

The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).

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Westlyn, Tennessee, USA

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