nomadseason

May Weather in Johnson City, United States

Last updated: June 24, 2025

In May, the average temperature in Johnson City, United States hovers around 17°C (64°F), with temperatures ranging from a brisk 0°C (32°F) to a warm 30°C (86°F). Expect 122 mm (4.8 in) of precipitation over approximately 15 days, accompanied by a high average humidity of 83%.

May Temperature in Johnson City

In May in Johnson City, the average temperature is 17°C (64°F). Maximum temperatures can reach 30°C (86°F), while the minimum can drop as low as 0°C (32°F). This wide range of temperatures means that travelers should be prepared for both warm days and chilly nights.

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

The chart illustrates May 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, May typically has an average temperature of 17°C (64°F), with highs reaching up to 30°C (86°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec374347546369737168584541
Data source: Temperature data for Johnson City generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Johnson City

In Johnson City in May, the precipitation amount is 122 mm (4.8 in) over a span of 15 days.

May Precipitation Trends in Johnson City

The chart displays monthly precipitation patterns in Johnson City, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Johnson City, May typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec951451291371221191021189712283125
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Johnson City

In Johnson City in May, humidity is 83%. With an average temperature of 17°C (64°F), this humidity feels like a warm, heavy blanket wrapping around you, making travel feel sluggish and prompting you to seek the nearest shade or air-conditioned escape.

May Average Humidity in Johnson City

This chart illustrates the average monthly humidity levels in Johnson City, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Johnson City is approximately 83%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Johnson City

In Johnson City in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Johnson City.

Maximum UV Index Levels in Johnson City for May

The chart shows the monthly maximum UV Index (UVI) for Johnson City in May, 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 May, the maximum UV index in Johnson City typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
Data source: Johnson City May 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 May 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 May’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 May’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

Compare Johnson City's Climate with Cities Worldwide