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

July 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
July, the same as June, is another warm summer month in Johnson City, Tennessee, with average temperature ranging between min 60.6°F (15.9°C) and max 83.3°F (28.5°C).

Temperature

With an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 60.6°F (15.9°C), July is the warmest month.

Heat index

In July, the average heat index is appraised at a tropical 90.9°F (32.7°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, wind, clothing). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In July, the average relative humidity is 76%.

Rainfall

In Johnson City, in July, during 19.6 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. In Johnson City, during the entire year, the rain falls for 187.8 days and collects up to 32.76" (832mm) of precipitation.

Snowfall

In Johnson City snow does not fall in May through September.

Daylight

The average length of the day in July is 14.3h.

Sunshine

In July, the average sunshine is 10.4h.

UV index

Months with the highest UV index in Johnson City are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.

What is the warmest month in Johnson City?

With an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 60.6°F (15.9°C), July is the warmest month in Johnson City.

What is the temperature in July in Johnson City?

In July, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 60.6°F (15.9°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, is calculated to 90.9°F (32.7°C).

What is the average humidity in July in Johnson City?

In Johnson City, the average relative humidity in July is 76%.

How many days does it rain in July in Johnson City?

In July, in Johnson City, Tennessee, the rain falls for 19.6 days. Throughout July, 3.11" (79mm) of precipitation is accumulated.

When it does not snow in Johnson City?

May through September are months without snowfall in Johnson City, Tennessee.

How many hours of daylight does Johnson City have in July?

In Johnson City, Tennessee, the average length of the day in July is 14.3h.

How many hours of sunshine does Johnson City have in July?

In July, the average sunshine in Johnson City, Tennessee, is 10.4h.

What are the months with the highest UV index in Johnson City?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in July in Johnson City?

The average daily maximum UV index in July in Johnson City, Tennessee, is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in July - Johnson City, TN
  • Average high temperature in July: 83.3°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 July: 60.6°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 July - Johnson City, TN
  • Average humidity in July: 76%

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

Average rainfall in July - Johnson City, TN
  • Average rainfall in July: 3.11"

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 July - Johnson City, TN
  • Average rainfall days in July: 19.6 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 July - Johnson City, TN
  • Average snowfall in July: 0"

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 July - Johnson City, TN
  • Average snowfall days in July: 0 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 July / Average sunshine in July - Johnson City, TN
  • Average daylight in July: 14.3h

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 July: 10.4h

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 July - Johnson City, TN
  • Average UV index in July: 6

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).