May weather forecast
Johnson City, TX

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Weather in May

The last month of the spring, May, is also a moderately hot month in Johnson City, Texas, with an average temperature varying between 64.8°F (18.2°C) and 82°F (27.8°C).

Temperature

In Johnson City, the average high-temperature in May slightly increases from 76.3°F (24.6°C) in April to a still moderately hot 82°F (27.8°C). During May, Johnson City's temperature falls to a steady low-temperature average of 64.8°F (18.2°C).

Heat index

The heat index in May is calculated to be a tropical 87.8°F (31°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

With an average relative humidity of 76%, May is the most humid month.

Rainfall

The month with the most rainfall in Johnson City is May, when the rain falls for 17.3 days and typically aggregates up to 4.13" (105mm) of precipitation.

Snowfall

March through October and December are months without snowfall.

Daylight

In May, the average length of the day is 13h and 41min.
On the first day of May in Johnson City, sunrise is at 6:49 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:30 pm CDT.

Sunshine

In Johnson City, the average sunshine in May is 8h.

UV index

In Johnson City, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, a regular UV index of 6 translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

What are the temperatures in Johnson City in May?

May temperatures in Johnson City, Texas, vary between a high-temperature of 82°F (27.8°C) and a low-temperature of 64.8°F (18.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is calculated to be 87.8°F (31°C).

What is the most humid month in Johnson City?

With an average relative humidity of 76%, May is the most humid month in Johnson City.

What is the average humidity in May in Johnson City?

The average relative humidity in May in Johnson City is 76%.

What is the wettest month in Johnson City?

May is the month with the most rainfall in Johnson City, Texas. Rain falls for 17.3 days and accumulates 4.13" (105mm) of precipitation.

How much does it rain in Johnson City in May?

In May, in Johnson City, Texas, the rain falls for 17.3 days. Throughout May, 4.13" (105mm) of precipitation is accumulated.

When it does not snow in Johnson City?

March through October and December are months without snowfall in Johnson City.

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

In Johnson City, Texas, the average day length in May is 13h and 41min.

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

In May, on the first day of the month, sunrise is at 6:49 am and sunset at 8:11 pm. On the last day of the month, in Johnson City, sunrise is at 6:32 am and sunset at 8:30 pm CDT.

How long on average sun shines in May in Johnson City?

In Johnson City, the average sunshine duration in May is 8h.

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

In May, the average daily maximum UV index in Johnson City is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Johnson City, TX

Average temperature in May - Johnson City, TX
  • Average high temperature in May: 82°F

The warmest month (with the highest average high temperature) is August (93.9°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in May: 64.8°F

The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is January (41.4°F).

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Average pressure in May
Johnson City, TX

Average pressure in May - Johnson City, TX
  • Average pressure in May: 29.91"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Johnson City, TX

Average wind speed in May - Johnson City, TX
  • Average wind speed in May: 9.6mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in May
Johnson City, TX

Average humidity in May - Johnson City, TX
  • Average humidity in May: 76%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in May
Johnson City, TX

Average rainfall in May - Johnson City, TX
  • Average rainfall in May: 4.13"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.18").

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Average rainfall days in May
Johnson City, TX

Average rainfall days in May - Johnson City, TX
  • Average rainfall days in May: 17.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.9 days).

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Average snowfall in May
Johnson City, TX

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

The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").

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Average snowfall days in May
Johnson City, TX

Average snowfall days in May - Johnson City, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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

Average daylight in May / Average sunshine in May - Johnson City, TX
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in May: 8h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 30min).

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Average sunshine days in May
Johnson City, TX

Average sunshine days in May - Johnson City, TX
  • Average sunshine days in May: 11.1 days

The month with the most sunshine days is January (21.1 days).
The months with the least sunshine days are May and September (11.1 days).

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Average UV index in May
Johnson City, TX

Average UV index in May - Johnson City, TX
  • Average UV index in May: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in May
Johnson City, TX

Average cloud cover in May - Johnson City, TX
  • Average cloud cover in May: 46

The month with the most cloud cover is May (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in May
Johnson City, TX

Average visibility in May - Johnson City, TX
  • Average visibility in May: 6mi

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

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Johnson City, Texas, USA

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