May weather forecast
Signal Mountain, TN

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Weather in May

May, the last month of the spring in Signal Mountain, is a moderately hot month, with temperature in the range of an average high of 77°F (25°C) and an average low of 56.8°F (13.8°C).

Temperature

May signals a minor shift in the average high-temperature, moving from April's pleasant 68.9°F (20.5°C) to a warm 77°F (25°C). The average low-temperature of 56.8°F (13.8°C) is witnessed during May.

Humidity

In May, the average relative humidity is 78%.

Rainfall

In Signal Mountain, during May, the rain falls for 17.2 days and regularly aggregates up to 3.7" (94mm) of precipitation. Throughout the year, there are 187.2 rainfall days, and 44.09" (1120mm) of precipitation is accumulated.

Snowfall

In Signal Mountain, snow does not fall in May through October.

Daylight

The average length of the day in May is 14h and 1min.
On the first day of May, sunrise is at 6:49 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:50 pm EDT.

Sunshine

In Signal Mountain, the average sunshine in May is 9.5h.

UV index

The months with the highest UV index in Signal Mountain are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during May morphs into the following directions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Signal Mountain in May?

In May, in Signal Mountain, the average high-temperature is 77°F (25°C), and the average low-temperature is 56.8°F (13.8°C).

What is the average humidity in May?

In May, the average relative humidity is 78%.

How many days does it rain in May?

In Signal Mountain, during May, the rain falls for 17.2 days and regularly aggregates up to 3.7" (94mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

Does it snow in May?

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

What is the average length of the day in May?

In Signal Mountain, the average day length in May is 14h and 1min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:49 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:50 pm EDT.

How many hours of sunshine does Signal Mountain have in May?

In Signal Mountain, the average sunshine duration in May is 9.5h.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index intensity in May?

In May, the average daily maximum UV index in Signal Mountain is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
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
Signal Mountain, TN

Average temperature in May - Signal Mountain, TN
  • Average high temperature in May: 77°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in May: 56.8°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in May
Signal Mountain, TN

Average pressure in May - Signal Mountain, TN
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in May
Signal Mountain, TN

Average wind speed in May - Signal Mountain, TN
  • Average wind speed in May: 5.1mph

The windiest month (with the highest average wind speed) is February (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in May
Signal Mountain, TN

Average humidity in May - Signal Mountain, TN
  • Average humidity in May: 78%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are June, July, August, September, October and November (76%).

Average rainfall in May
Signal Mountain, TN

Average rainfall in May - Signal Mountain, TN
  • Average rainfall in May: 3.7"

The wettest month (with the highest rainfall) is December (4.53").
The driest month (with the least rainfall) is September (2.76").

Average rainfall days in May
Signal Mountain, TN

Average rainfall days in May - Signal Mountain, TN
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (10.5 days).

Average snowfall in May
Signal Mountain, TN

Average snowfall in May - Signal Mountain, TN
  • Average snowfall in May: 0"

The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Signal Mountain, TN

Average snowfall days in May - Signal Mountain, TN
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Signal Mountain, TN

Average daylight in May / Average sunshine in May - Signal Mountain, TN
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in May: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in May
Signal Mountain, TN

Average sunshine days in May - Signal Mountain, TN
  • Average sunshine days in May: 11.7 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (7.7 days).

Average UV index in May
Signal Mountain, TN

Average UV index in May - Signal Mountain, TN
  • Average UV index in May: 6

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

Average cloud cover in May
Signal Mountain, TN

Average cloud cover in May - Signal Mountain, TN
  • Average cloud cover in May: 37

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

Average visibility in May
Signal Mountain, TN

Average visibility in May - Signal Mountain, TN
  • Average visibility in May: 5mi

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

Signal Mountain, Tennessee, USA

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