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Climate in Tennessee
(United States)

Average daytime and nighttime temperatures

All climatic diagrams on this site result from the collected data from eleven measuring weather stations in Tennessee.
Weather stations at an altitude above 660m have not been included.
All data correspond to the average monthly values of the last 20 years.
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Tennessee is one of the warmest region in the United States with an average daily high temperature of 21 degrees. The climate is almost moderate, but also offers a few sultry months with high humidity and high temperatures.
Overview: Climate in the United States
Daylengths and sun positions in the United States
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Hours of sunshine per daySunshine hours per day in Tennessee
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 10 hours per day, June is the sunniest month in the state of Tennessee. In December the sun shines the shortest.
Rainy days per monthRainy days per month in Tennessee
A rainy day is a day on which at least an amount of 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 10 rainy days, July offers the most number of rainy days, and in September the least.
Precipitation in mm/dayPrecipitation in Tennessee
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 3.1 mm, the least rain falls in October. February, on the other hand, has the most rain.
Relative humidity in %Relative humidity in Tennessee
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture of the physically possible is actually contained in the air. At high humidity, the person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% gives as pleasant. With humidity averaging 80%, August is the most uncomfortable. In April, on the other hand, it is easier to endure.
Absolute humidity in g/m³Absolute humidity in Tennessee
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is reached in 4 months in Tennessee, although these are average values, and a month is rarely completely or not at all considered humid.
Humidex in °CHumidex in Tennessee
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Map of Tennessee

Most important cities in the federal state »Tennessee«

Alone 2 major cities with over 600,000 inhabitants are located here. The federal state has a west-east extension of about 710 km and over 180 km from north to south.

CityPopulationGeo position
Nashville685,62836° 9' 57"N86° 47' 4"W
Memphis650,61835° 8' 58"N90° 2' 56"W
Knoxville186,23935° 57' 38"N83° 55' 15"W
Chattanooga177,57135° 2' 44"N85° 18' 35"W
East Chattanooga154,02435° 3' 55"N85° 14' 57"W
Clarksville150,28736° 31' 47"N87° 21' 34"W
Murfreesboro131,94735° 50' 44"N86° 23' 25"W
Jackson65,21135° 36' 52"N88° 48' 50"W
Johnson City63,15236° 18' 48"N82° 21' 12"W
Franklin62,48735° 55' 30"N86° 52' 8"W
Bartlett54,61335° 12' 16"N89° 52' 26"W
Hendersonville51,37236° 18' 17"N86° 37' 12"W
Kingsport48,20536° 32' 54"N82° 33' 43"W
Collierville43,96535° 2' 31"N89° 39' 52"W
Cleveland41,28535° 9' 34"N84° 52' 36"W
Smyrna39,97435° 58' 58"N86° 31' 7"W
Germantown38,84435° 5' 12"N89° 48' 36"W
Brentwood37,06036° 1' 59"N86° 46' 58"W
Columbia34,68135° 36' 54"N87° 2' 7"W
La Vergne32,58836° 0' 56"N86° 34' 55"W
Cookeville30,43536° 9' 46"N85° 30' 6"W
Gallatin30,27836° 23' 18"N86° 26' 48"W
Oak Ridge29,33036° 0' 37"N84° 16' 11"W
Morristown29,13736° 12' 50"N83° 17' 42"W
Spring Hill29,03635° 45' 4"N86° 55' 48"W
Maryville27,46535° 45' 23"N83° 58' 14"W
Bristol26,70236° 35' 42"N82° 11' 19"W
Lebanon26,19036° 12' 29"N86° 17' 28"W
Mount Juliet23,67136° 12' 0"N86° 31' 7"W
East Ridge20,97935° 0' 51"N85° 15' 7"W

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants: geonames.org, United Nations Statistics Division and own research.
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