Last updated: June 24, 2025
In Johnson City, United States, the average temperature in August is a pleasant 21°C (70°F), making it an ideal time to enjoy the outdoors. However, be prepared for a temperature range that can dip to a minimum of 7°C (46°F) and climb as high as 32°C (90°F). The region experiences an average precipitation of 108 mm (4.2 in) over 12 days, so pack an umbrella just in case! With an average humidity level of 62%, the climate is comfortable and inviting for both locals and visitors alike.
In August in Johnson City, the average temperature is 21°C (70°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 7°C (46°F). This pleasant climate makes Johnson City an ideal destination for travelers seeking moderate weather and enjoyable outdoor activities.
In Johnson City in August, the total precipitation amount is 108 mm (4.2 in) spread over 12 days.
In Johnson City in August humidity is 62%. With an average temperature of 21°C (70°F), this humidity feels like a warm blanket—comfortable yet slightly muggy, making it ideal for exploring in the early morning or late afternoon when the air is cooler and more refreshing.
In Johnson City in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Johnson City.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 73 mm (2.9 inches) | 87% | moderate |
| February Weather | -2°C (29°F) | 89 mm (3.5 inches) | 85% | moderate |
| March Weather | 2°C (35°F) | 89 mm (3.5 inches) | 85% | high |
| April Weather | 8°C (47°F) | 120 mm (4.7 inches) | 83% | very high |
| May Weather | 14°C (58°F) | 131 mm (5.1 inches) | 75% | very high |
| June Weather | 19°C (67°F) | 103 mm (4.1 inches) | 73% | very high |
| July Weather | 22°C (72°F) | 121 mm (4.8 inches) | 65% | very high |
| August Weather | 21°C (70°F) | 108 mm (4.2 inches) | 62% | very high |
| September Weather | 17°C (64°F) | 95 mm (3.7 inches) | 66% | very high |
| October Weather | 12°C (54°F) | 135 mm (5.3 inches) | 79% | high |
| November Weather | 4°C (39°F) | 92 mm (3.6 inches) | 87% | moderate |
| December Weather | 0°C (32°F) | 88 mm (3.5 inches) | 85% | low |