May weather forecast
Chattanooga, TN

Panorama of the area of Chattanooga, Tennessee
Panorama of the area of Chattanooga, Tennessee

Weather in May

May, the last month of the spring in Chattanooga, is a warm month, with an average temperature ranging between min 57.2°F (14°C) and max 78.1°F (25.6°C).

Temperature

In Chattanooga, the average high-temperature in May slightly increases from a pleasant 69.4°F (20.8°C) in April to a moderately hot 78.1°F (25.6°C). The average low-temperature, in Chattanooga, Tennessee, is 57.2°F (14°C).

Humidity

The average relative humidity in May is 77%.

Rainfall

In Chattanooga, in May, during 15.8 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Chattanooga, during the entire year, the rain falls for 174.4 days and collects up to 41.14" (1045mm) of precipitation.

Snowfall

In Chattanooga, snow does not fall through October.

Daylight

In May, the average length of the day in Chattanooga is 14h and 1min.
On the first day of the month, sunrise is at 6:49 am and sunset at 8:26 pm. On the last day of May, sunrise is at 6:28 am and sunset at 8:49 pm EDT.

Sunshine

The average sunshine in May in Chattanooga, Tennessee, is 9.4h.

UV index

The months with the highest UV index in Chattanooga are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in May in Chattanooga?

In Chattanooga, Tennessee, the average relative humidity in May is 77%.

How many days does it rain in May in Chattanooga?

In May, in Chattanooga, Tennessee, the rain falls for 15.8 days. Throughout May, 3.43" (87mm) of precipitation is accumulated.

When it does not snow in Chattanooga?

In Chattanooga, Tennessee, snow does not fall in May through October.

Does it snow in Chattanooga in May?

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

How many hours of daylight does Chattanooga have in May?

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

When are sunrise and sunset in May in Chattanooga?

In May, on the first day of the month, sunrise is at 6:49 am and sunset at 8:26 pm. On the last day of the month, in Chattanooga, Tennessee, sunrise is at 6:28 am and sunset at 8:49 pm EDT.

How many hours of sunshine does Chattanooga have in May?

The average sunshine duration in May in Chattanooga, Tennessee, is 9.4h.

What is the month with the highest UV index in Chattanooga?

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

How high is the UV index in May in Chattanooga?

The average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in May
Chattanooga, TN

Average temperature in May - Chattanooga, TN
  • Average high temperature in May: 78.1°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in May: 57.2°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

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Average pressure in May
Chattanooga, TN

Average pressure in May - Chattanooga, TN
  • Average pressure in May: 30.02"

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

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Average wind speed in May
Chattanooga, TN

Average wind speed in May - Chattanooga, TN
  • Average wind speed in May: 5mph

The windiest month (with the highest average wind speed) is February (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity in May
Chattanooga, TN

Average humidity in May - Chattanooga, TN
  • Average humidity in May: 77%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, July, August, October and November (75%).

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Average rainfall in May
Chattanooga, TN

Average rainfall in May - Chattanooga, TN
  • Average rainfall in May: 3.43"

The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is September (2.56").

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Average rainfall days in May
Chattanooga, TN

Average rainfall days in May - Chattanooga, TN
  • Average rainfall days in May: 15.8 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.8 days).

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Average snowfall in May
Chattanooga, TN

Average snowfall in May - Chattanooga, TN
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Chattanooga, TN

Average snowfall days in May - Chattanooga, TN
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Chattanooga, TN

Average daylight in May / Average sunshine in May - Chattanooga, TN
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 29min).
The month with the shortest days is December (Average daylight: 9h and 51min).

  • Average sunshine in May: 9.4h

The month with the most sunshine is June (Average sunshine: 10.3h).
The month with the least sunshine is December (Average sunshine: 4.9h).

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Average sunshine days in May
Chattanooga, TN

Average sunshine days in May - Chattanooga, TN
  • Average sunshine days in May: 13.3 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9.4 days).

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Average UV index in May
Chattanooga, TN

Average UV index in May - Chattanooga, 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 and December (UV index 2).

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Average cloud cover in May
Chattanooga, TN

Average cloud cover in May - Chattanooga, 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).

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Average visibility in May
Chattanooga, TN

Average visibility in May - Chattanooga, 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).

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