January in Johnson City averages a daily high of 8.2°C with nights around -2.8°C. Expect roughly 13.5 wet days totalling 97.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Johnson City is April–May.
Based on ELIZABETHTON, TN US (10.4km), 1995–2024. 29 years of January data.