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August Weather in Johnson City, United States

Last updated: June 24, 2025

In Johnson City, United States, the average temperature in August hovers around 22°C (71°F), offering a pleasant climate. However, temperatures can dip to a minimum of 11°C (53°F), while reaching a maximum of 30°C (87°F) on hotter days. Expect 118 mm (4.7 in) of precipitation spread over approximately 15 days, with an average humidity level of 66%. Perfect for those who enjoy a mix of sunshine and refreshing showers!

August Temperature in Johnson City

In August in Johnson City, the average temperature is 22°C (71°F), with maximums reaching 30°C (87°F) and minimums dropping as low as 11°C (53°F). This pleasant climate makes it an ideal destination for travelers seeking comfortable weather.

August Weather in Johnson City: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Johnson City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnson City, August typically has an average temperature of 22°C (71°F), with highs reaching up to 30°C (87°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec374347546369737168584541
Data source: Temperature data for Johnson City generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Johnson City

In Johnson City in August, the total precipitation amount is 118 mm (4.7 in) spread over 15 days.

August Precipitation Trends in Johnson City

The chart displays monthly precipitation patterns in Johnson City, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Johnson City, August typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec951451291371221191021189712283125
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Johnson City

In Johnson City in August, humidity is 66%. With an average temperature of 22°C (71°F), this humidity feels like a warm blanket, making travel comfortable yet slightly sticky, necessitating frequent breaks to hydrate and seek shade.

August Average Humidity in Johnson City

This chart illustrates the average monthly humidity levels in Johnson City, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Johnson City is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Johnson City

In Johnson City in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Johnson City.

Maximum UV Index Levels in Johnson City for August

The chart shows the monthly maximum UV Index (UVI) for Johnson City in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Johnson City typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
Data source: Johnson City August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Johnson City Compares to Other Months

Weather in Johnson City varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Johnson City, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Johnson City, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)95 mm (3.7 inches)87%moderate
February Weather6°C (43°F)145 mm (5.7 inches)87%high
March Weather8°C (47°F)129 mm (5.1 inches)86%very high
April Weather12°C (55°F)137 mm (5.4 inches)84%very high
May Weather17°C (64°F)122 mm (4.8 inches)83%extreme
June Weather20°C (69°F)118 mm (4.7 inches)83%extreme
July Weather23°C (73°F)102 mm (4.0 inches)79%extreme
August Weather22°C (71°F)118 mm (4.7 inches)66%very high
September Weather20°C (68°F)97 mm (3.8 inches)68%very high
October Weather15°C (59°F)122 mm (4.8 inches)78%very high
November Weather7°C (45°F)83 mm (3.3 inches)89%moderate
December Weather5°C (41°F)125 mm (4.9 inches)86%moderate

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