May weather forecast
Johnson City, TN

The front entrance to the Public Library in Johnson City, Tennessee
The front entrance to the Public Library in Johnson City, Tennessee

Weather in May

The last month of the spring, May, is a warm month in Johnson City, Tennessee, with an average temperature fluctuating between 51.8°F (11°C) and 73.4°F (23°C).

Temperature

In May, the average high-temperature marginally rises from a comfortable 64.9°F (18.3°C) in April to a warm 73.4°F (23°C). The average low-temperature, in Johnson City, is 51.8°F (11°C).

Humidity

In May, the average relative humidity in Johnson City is 78%.

Rainfall

In May, the rain falls for 19.4 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. In Johnson City, during the entire year, the rain falls for 187.8 days and collects up to 32.76" (832mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in May is 14h and 7min.
On the first day of the month, sunrise is at 6:35 am and sunset at 8:17 pm. On the last day of May, sunrise is at 6:13 am and sunset at 8:40 pm EDT.

Sunshine

In Johnson City, Tennessee, the average sunshine in May is 9.9h.

UV index

In Johnson City, Tennessee, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Johnson City?

In Johnson City, Tennessee, the average relative humidity in May is 78%.

How many days does it rain in May in Johnson City?

In Johnson City, Tennessee, in May, it is raining for 19.4 days, with typically 3.07" (78mm) of accumulated precipitation.

When it does not snow in Johnson City?

May through September are months without snowfall.

Does it snow in Johnson City in May?

In May, in Johnson City, Tennessee, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Johnson City?

In Johnson City, the average day length in May is 14h and 7min.

What time are sunrise and sunset in May in Johnson City?

In May, on the first day of the month, sunrise is at 6:35 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:40 pm EDT.

How many hours of sunshine does Johnson City have in May?

The average sunshine duration in May in Johnson City, Tennessee, is 9.9h.

What is the UV index reading in May in Johnson City?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Johnson City, TN

Average temperature in May - Johnson City, TN
  • Average high temperature in May: 73.4°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in May: 51.8°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in May
Johnson City, TN

Average pressure in May - Johnson City, TN
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in May
Johnson City, TN

Average wind speed in May - Johnson City, TN
  • Average wind speed in May: 5.2mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in May
Johnson City, TN

Average humidity in May - Johnson City, TN
  • Average humidity in May: 78%

The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in May
Johnson City, TN

Average rainfall in May - Johnson City, TN
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is February (3.27").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in May
Johnson City, TN

Average rainfall days in May - Johnson City, TN
  • Average rainfall days in May: 19.4 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (11.2 days).

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Average snowfall in May
Johnson City, TN

Average snowfall in May - Johnson City, TN
  • Average snowfall in May: 0"

The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Johnson City, TN

Average snowfall days in May - Johnson City, TN
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Johnson City, TN

Average daylight in May / Average sunshine in May - Johnson City, TN
  • Average daylight in May: 14h and 7min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 44min).

  • Average sunshine in May: 9h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in May
Johnson City, TN

Average sunshine days in May - Johnson City, TN
  • Average sunshine days in May: 9.2 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is July (8.3 days).

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Average UV index in May
Johnson City, TN

Average UV index in May - Johnson City, TN
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in May
Johnson City, TN

Average cloud cover in May - Johnson City, TN
  • Average cloud cover in May: 36

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 31).

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Average visibility in May
Johnson City, TN

Average visibility in May - Johnson City, TN
  • Average visibility in May: 5mi

The months with the highest visibility are April, June, July, October and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September and December (5mi).

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