Johnson City
Tennessee, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Johnson City, TN

The front entrance to the Public Library in Johnson City, Tennessee, with flags flying on either side of the main entrance
The front entrance to the Public Library in Johnson City, Tennessee, with flags flying on either side of the main entrance
April in Johnson City, Tennessee, is a comfortable spring month, with average temperature fluctuating between 44.2°F (6.8°C) and 64.9°F (18.3°C).

Temperature

In Johnson City, the average high-temperature rises, from a fresh 54.5°F (12.5°C) in March, to an enjoyable 64.9°F (18.3°C). In April, in Johnson City, Tennessee, the average low-temperature is 44.2°F (6.8°C).

Humidity

The average relative humidity in April is 77%.

Rainfall

In April, the rain falls for 16.8 days. Throughout April, 3.15" (80mm) of precipitation is accumulated. In Johnson City, Tennessee, during the entire year, the rain falls for 187.8 days and collects up to 32.76" (832mm) of precipitation.

Snowfall

Months with snowfall in Johnson City are January through April, October through December. April is the last month it regularly snows. During 1 snowfall days, in April, Johnson City aggregates 0.24" (6mm) of snow. In Johnson City, during the entire year, snow falls for 32.1 days, and aggregates up to 13.31" (338mm) of snow.

Daylight

In April, the average length of the day in Johnson City is 13.2h.

Sunshine

In Johnson City, the average sunshine is 8.8h.

UV index

In April, the average daily maximum UV index in Johnson City is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Johnson City?

In April, in Johnson City, the average high-temperature is 64.9°F (18.3°C), and the average low-temperature is 44.2°F (6.8°C).

What is the average humidity in April in Johnson City?

In Johnson City, the average relative humidity in April is 77%.

How much does it rain in Johnson City in April?

In Johnson City, during April, the rain falls for 16.8 days and regularly aggregates up to 3.15" (80mm) of precipitation.

What is the last month it snows in Johnson City?

April is the last month it regularly snows in Johnson City. During 1 snowfall days, in April, Johnson City aggregates 0.24" (6mm) of snow.

What is the average length of the day in April in Johnson City?

In Johnson City, the average length of the day in April is 13.2h.

How long on average sun shines in April in Johnson City?

In April, the average sunshine in Johnson City is 8.8h.

How high is the UV index in April in Johnson City?

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in April - Johnson City, TN
  • Average high temperature in April: 64.9°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in April: 44.2°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average humidity in April - Johnson City, TN
  • Average humidity in April: 77%

Months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).

Average rainfall in April - Johnson City, TN
  • Average rainfall in April: 3.15"

The wettest month (with the highest rainfall) is February (3.27").
The driest month (with the lowest rainfall) is September (1.77").

Average rainfall days in April - Johnson City, TN
  • Average rainfall days in April: 16.8 days

The month with the highest number of rainy days is July (19.6 days).
The month with the lowest number of rainy days is November (11.2 days).

Average snowfall in April - Johnson City, TN
  • Average snowfall in April: 0.24"

The month with the highest snowfall is December (3.74").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in April - Johnson City, TN
  • Average snowfall days in April: 1 days

The month with the highest number of snowfall days is January (8.9 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in April / Average sunshine in April - Johnson City, TN
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in April: 8.8h

The month with most sunshine is June (Average sunshine: 10.6h).
The month with least sunshine is January (Average sunshine: 5h).

Average UV index in April - Johnson City, TN
  • Average UV index in April: 4

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).