Get the monthly weather forecast for Gatlinburg, TN, including daily high/low, historical averages, to help you plan ahead. A climate graph showing the rainfall data, temperatures and normals. In July, the warmest month, the average day time temperature rises to 86.9°F. In December the average monthly rainfall in Knoxville, TN is 2.97 inches with rain usually falling on between 11 and 12 days. Knoxville weather averages and climate Knoxville, Tennessee. As the cold air mass moved southeastward, it modified only slightly, resulting in frigid air for most of the middle and upper Eastern Seaboard starting on the morning of January 21. The wettest weather of the year usually falls during March. A climate graph showing the rainfall data, temperatures and normals. Afternoons can be quite mild with average high temperatures reaching 10.1 °C (50.2 °F). Average Temperature: 13℉ to 64℉ Note that these seasonal averages are in contrast with those observed in Nashville in december with a maximum record of 74°F in 2012 and a minimum record of 9°F in 2010. The average temperature in Knoxville, Tn in December is cool at 4.5 °C (40.1 °F). (Knoxville, Tennessee - TN, USA) The city of Knoxville enjoys a moderate climate, with warm summer weather and a cold climate in winter. Please address all questions and comments to Charissa Oglesby by email at coglesby@knoxvilletn.gov or by telephone at (865) 215-4321 Note 1: Rainfall data is collected and maintained by the Stormwater Engineering Division, Suite 480 City County Building (215-2148), as part of the NPDES monitoring program; see the NPDES web page for additional information. The Knoxville area has a growing season of 220 days. In Knoxville, the summers are long, hot, and muggy; the winters are short, very cold, and wet; and it is partly cloudy year round. The US average is 38 inches of rain per year. Knoxville Climate Page. Well, of course, we believe there’s something special about the weather in each season, but depending on the type of vacation you’re looking for, we’ve put together the Gatlinburg and Pigeon Forge weather averages and weather conditions for each month. Average weather Knoxville, TN. Mean monthly temperatures have a range of 22.6 °C (40.7°F) which is a below moderate range. On average, Gatlinburg receives 1 inch of snowfall during the month of December. Knoxville, TN Monthly Weather | AccuWeather Averages are for McGhee Tyson Airport, which is 11 miles from Knoxville. There are usually 4 hours of bright sunshine each day, which represents 41% of the 10 hours of daylight. In some parts of the mountainous east, where the temperatures are considerably lower, the growing season is as short as 130 days. 1949 was the driest December with only 0.00 inches of rain falling, and 2008 was the wettest December with 9.70 inches of rain. The average maximum daytime temperature in Knoxville in December is a cool 10°C (50°F). On average, there are 204 sunny days per year in Knoxville. Knoxville weather averages and climate Knoxville, Tennessee. As the cold air mass moved southeastward, it modified only slightly, resulting in frigid air for most of the middle and upper Eastern Seaboard starting on the morning of January 21. The US average is 205 sunny days. Knoxville averages 6 inches of snow per year. Knoxville's coldest month is January when the average temperature overnight is 28.9°F. Spring Knoxville is a cool season, with temperatures … Annual Weather Averages Near Knoxville. Climate data and weather averages in Knoxville. Knoxville gets some kind of precipitation, on average, 127 days per year. ... Knoxville, TN Monthly Weather. Average Weather in Knoxville Tennessee, United States. You can expect to have about 10 days with temperatures down below 32°F, or 32% of the month. The city of Knoxville enjoys a moderate climate, with warm summer weather and a cold climate in winter. Knoxville's coldest month is January when the average temperature overnight is 28.9°F. The highest monthly average temperature in Knoxville for July is 78 degrees. The monthly temperature, precipitation and hours of sunshine. Overnight temperatures are generally slightly cold with an average low of -1.1 °C (30 °F).