I am not sure how the weather is there. I lived in Northern Mississippi years ago, and it snowed during the winter. Have you tried looking at the local news channels in Nashville? Maybe they have an archive of some sorts. Or try Weather.com or NOAA weather for past forecasts. I am subject to sinus problems all year due to chronic sinusitis and having an allergy to pine tree pollen and its sap. These days with the air pollution, the so called global warming and our current cooling trend, no where is safe from the ravages of snow.
I have been through parts of Tennessee and its beautiful.