Welcome to the Tennessee Climatological Service....


Currently, Tennessee does not have an official NOAA state climatologist (SC). TVA retired the program in late 2005, and no agency or university has been able to reestablish the State Climatologist Office (SCO). In the meantime, The Office of the Tennessee Climatological Service was initiatated by the Department of Biosystems Engineering and Soil Science and the Department of Geography at the University of Tennessee in Knoxville, TN, the Department of Agriculture, Geoscience and Natural Resources at the University of Tennessee at Martin, and the Department of Agricultural Sciences at Tennessee State University. The function of this service is to collect, disseminate, and interpret climate data for the State of Tennessee. This web site provides links to sources of climate data and seasonal forecasts for Tennessee. Most data on the site are available for free; a charge may apply for additional data or interpretation, or for testimony in a legal case. 

National Snow Assessment​

Climate Reports

Wet/dry sequences for selected locations in Tennessee (pdf)

Climate Divisions of Tennessee:

The National Climatic Data Center divides each state into climate divisions for many climate summaries. Tennessee has fou​r climate divisions​.

Latest News:

  • La Niña has transitioned to ENSO-neutral conditions, which are expected to continue through 2013 More (pdf report)...
  • Tennessee is having normal to slightly below temperatures and significantly higher than normal rainfall in 2013. Howeever, August rainfall was below normal for many locations throughout the state. Single day rainfall total records have been broken this year.

    From January 1 - December 20, 2013:

  • Memphis - mean temperature 62.9 is 0.2 F below normal, precip 57.94" is 7.64" above normal (17th wettest since 1940), greatest single day rainfall = 4.18", since 9/1 - 20 days with minimum temperature 32F or below

  • Martin - mean temperature of 59.3 is 0.5 F below normal, precip 60.11" is "10.06 above normal, greatest single day rainfall = 3.10", since 9/1 - 24 days with minimum temperature 32F or below

  • Nashville - mean temperature of 60.0 F is 0.2 below normal, precip 42.65" is 6.59" above normal, greatest single day rainfall = 3.30", since 9/1 - 27 days with minimum temperature 32F or below
  • Crossville - mean temperature of 55.7 F is 0.3 F below normal, precip 58.27" is 4.64" above normal, greatest single day rainfall = 2.60", since 9/1 - 32 days with minimum temperature 32F or below

  • Knoxville - mean temperature of 59.3 F is 0.6 F below normal, precip 65.52" is 19.57" above normal (1st wettest since 1910), greatest single day rainfall = 2.89", since 9/1 - 23 days with minimum temperature 32F or below

  • Chattanooga - mean temperature of 61.4 F is 0.4 F above normal, precip 65.12" is 13.94" above normal (6th wettest since 1938), greatest single day rainfall = 3.17", since 9/1 - 19 days with minimum temperature 32F or below

  • Bristol/TriCities - mean temperature of 56.3 F is 0.4 F below normal; precip 54.54" is 14.25" above normal (2nd wettest since 1938), greatest single day rainfall = 2.90", since 9/1 - ​33 days with minimum temperature 32F or below

Current Moisture & Drought Status:

The TVA Rainfall/Runoff comparison shows that we are currently running much ahead of normal for the year so far.

Rainfall Runoff Comparison (Eastern Valley)6.15