July weather forecast and climate
Johnson City, TN

The front entrance to the Public Library in Johnson City, Tennessee
The front entrance to the Public Library in Johnson City, Tennessee

Weather in July

July, like June, in Johnson City, Tennessee, is a moderately hot summer month, with temperature in the range of an average high of 83.3°F (28.5°C) and an average low of 60.6°F (15.9°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 evaluated at a hot 90.9°F (32.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like clothing, pregnancy, metabolic differences, and activity influence one's weather impression. 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 particularly important for children. 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 in Johnson City, Tennessee, is 76%.

Rainfall

In Johnson City, 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

May through September are months without snowfall in Johnson City.

Daylight

In July, the average length of the day is 14.3h.

Sunshine

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

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Johnson City?

July 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).

What is the temperature in July in Johnson City?

In Johnson City, Tennessee, 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). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, in July is calculated to 90.9°F (32.7°C).

What is the average humidity in July in Johnson City?

The average relative humidity in July is 76%.

How much does it rain in Johnson City in July?

In Johnson City, in July, during 19.6 rainfall days, 3.11" (79mm) of precipitation is typically 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 July, the average length of the day in Johnson City, Tennessee, is 14.3h.

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

The average sunshine in July in Johnson City is 10.4h.

What is the month with the highest UV index in Johnson City?

Months with the highest UV index in Johnson City are June through August, with an average maximum UV index of 6.

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

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in July
Johnson City, TN

Average temperature in July - Johnson City, TN
  • Average high temperature in July: 28.5°C

The warmest month (with the highest average high temperature) is July (28.5°C).
The month with the lowest average high temperature is January (5.3°C).

  • Average low temperature in July: 15.9°C

The month with the highest average low temperature is July (15.9°C).
The coldest month (with the lowest average low temperature) is January (-3°C).

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Average pressure in July
Johnson City, TN

Average pressure in July - Johnson City, TN
  • Average pressure in July: 1016.6mbar

The month with the highest atmospheric pressure is November (1021.3mbar).
The month with the lowest atmospheric pressure is June (1015.7mbar).

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Average wind speed in July
Johnson City, TN

Average wind speed in July - Johnson City, TN
  • Average wind speed in July: 6.4km/h

The windiest month (with the highest average wind speed) is April (10.6km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).

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Average humidity in July
Johnson City, TN

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%).

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Average rainfall in July
Johnson City, TN

Average rainfall in July - Johnson City, TN
  • Average rainfall in July: 79mm

The wettest month (with the highest rainfall) is February (83mm).
The driest month (with the least rainfall) is September (45mm).

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Average rainfall days in July
Johnson City, TN

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 least rainy days is November (11.2 days).

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Average snowfall in July
Johnson City, TN

Average snowfall in July - Johnson City, TN
  • Average snowfall in July: 0mm

The month with the highest snowfall is December (95mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in July
Johnson City, TN

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 least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Johnson City, TN

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 the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in July: 10.4h

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

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Average sunshine days in July
Johnson City, TN

Average sunshine days in July - Johnson City, TN
  • Average sunshine days in July: 8.3 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is July (8.3 days).

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Average UV index in July
Johnson City, TN

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).

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Average cloud cover in July
Johnson City, TN

Average cloud cover in July - Johnson City, TN
  • Average cloud cover in July: 33

The month with the most cloud cover is February (Cloud cover 52).
Months with the least cloud cover are June and August (Cloud cover 31).

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Average visibility in July
Johnson City, TN

Average visibility in July - Johnson City, TN
  • Average visibility in July: 9km

Months with the highest visibility are April, June, July, October and November (9km).
Months with the lowest visibility are January, February, March, May, August, September and December (8km).

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