Current weather observations at the University of Tennessee-Martin can be found here

(Currently Available to Local Campus Users Only)

In the meantime, archived weather data are available for the following years:
2014 (Jan-Jun 3)
2013 (Jan-Dec)
2012 (Jan-Dec)
2011 (Jan-Dec)
2010 (Aug-Dec)

Data are provided on an "as is" basis and have not been thoroughly quality-controlled at this time.