Last updated: June 24, 2025
In January, the average temperature in Johnson City, United States hovers around -3°C (26°F), with a minimum that can plunge to -29°C (-19°F) and a maximum reaching 17°C (63°F). Expect 73 mm (2.9 in) of precipitation over approximately 11 days, making the air feel quite damp with an average humidity of 87%.
In January in Johnson City, the average temperature is -3°C (26°F). The maximum can reach 17°C (63°F), while the minimum can drop as low as -29°C (-19°F). Be prepared for a wide range of temperatures when traveling to Johnson City during this month.
In Johnson City in January, the precipitation amount is 73 mm (2.9 in), spread over 11 days.
In Johnson City in January, humidity is 87%. With an average temperature of -3°C (26°F), this humidity feels like walking through a thick fog, making travels uncomfortable and adding a chill that seeps into your bones.
In Johnson City in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Johnson City, you can check the information here.
UV Risk Categories
Weather in Johnson City varies notably across the year, with each month offering distinct climate conditions. This page compares January’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 |