Flat Top Mountain, TN climate
Flat Top Mountain has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 86°, a January night drops to 30°, and about 4 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Flat Top Mountain feels like
Winter
Spring
Summer
Fall
Flat Top Mountain weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 47° | 30° | 5.5" | 1.4" | 8 | 30° – 46° |
| February | 52° | 33° | 5.5" | 1.8" | 9 | 33° – 50° |
| March | 60° | 40° | 5.7" | 0.3" | 9 | 44° – 60° |
| April | 70° | 48° | 5.6" | 0 | 9 | 54° – 64° |
| May | 77° | 57° | 4.5" | 0 | 8 | 61° – 72° |
| June | 83° | 63° | 5.0" | 0 | 8 | 69° – 77° |
| July | 86° | 67° | 4.9" | 0 | 9 | 73° – 80° |
| August | 86° | 66° | 4.0" | 0 | 8 | 71° – 81° |
| September | 81° | 60° | 4.8" | 0 | 6 | 67° – 76° |
| October | 71° | 49° | 4.0" | 0 | 6 | 56° – 65° |
| November | 59° | 39° | 4.9" | 0 | 7 | 43° – 54° |
| December | 50° | 33° | 6.3" | 0.8" | 8 | 33° – 52° |
| Year | 68° | 49° | 60.5" | 4.3" | 95 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Flat Top Mountain
Flat Top Mountain gets 60 inches of rain and melted snow a year. December is the wettest month and October the driest. Rain or snow falls on about 95 days a year.
About 203 frost-free days a year
In half of years the last 32° night comes by April 7 and the first one by October 29. That leaves about 203 frost-free days for gardens, longer than 74% of U.S. towns.
Heating and cooling a home in Flat Top Mountain
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Flat Top Mountain, 75% of that work is heating and 25% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Flat Top Mountain and its neighbors
Flat Top Mountain borders 2 towns with climate data. January nights across them vary by 1.4°. Mowbray Mountain has the coldest January nights (29°) and Soddy-Daisy the hottest July afternoons (87°). Flat Top Mountain’s January low is 30° and its July high 86°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Flat Top Mountain compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Flat Top Mountain averaged 0.9° warmer than the 1900s. The biggest change is in December (+1.9°). The shift is smaller than in 80% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Flat Top Mountain’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 33° to 52°. July is the most reliable, staying within 7°.
Common questions about Flat Top Mountain’s climate
What is the coldest month in Flat Top Mountain?
January, with a typical high of 47° and a low of 30°.
What is the hottest month in Flat Top Mountain?
July, with a typical high of 86° and a low of 67°. About 17 days a year reach 90°.
How much snow does Flat Top Mountain get?
About 4 inches in a normal winter, most of it in February.
When is the first frost in Flat Top Mountain?
In half of years the first 32° night comes by October 29, and the last spring frost by April 7.
What is the rainiest month in Flat Top Mountain?
December, with 6.3 inches of rain and melted snow. The year totals 60 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Flat Top Mountain itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Soddy Daisy-mowbray Mtn, TN (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.