Johnson City (TX) Weather & Climate: Best Time to Visit

The climate in Johnson City is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a very hot 36°C (97°F) in August, the warmest time of the year, to a moderate 17°C (63°F) during cooler months like January.

At night, you can expect temperatures ranging from 22°C (72°F) in August to around 2°C (36°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Johnson City receives mid-range precipitation levels, with 809 mm (32 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives high rainfall, averaging 133 mm (5.2 in) of precipitation, recorded across 8 rainy days. In contrast, the driest month February brings less rainfall, with 27 mm (1.1 in) over 5 rainy days. For more details, please visit our Johnson City Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Johnson City. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.1 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Johnson City.

The city experiences its highest humidity in May, reaching 71%. In March, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year