Knoxville, GA climate
Knoxville has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 91°, a January night drops to 34°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Knoxville feels like
Winter
Spring
Summer
Fall
Knoxville 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 | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 58° | 34° | 4.3" | 0.2" | 9 | 0 | 38° – 53° |
| February | 62° | 37° | 4.3" | 0 | 7 | 0 | 41° – 59° |
| March | 69° | 44° | 4.7" | 0.1" | 7 | 0 | 50° – 64° |
| April | 76° | 50° | 3.7" | 0 | 6 | 0 | 59° – 67° |
| May | 84° | 58° | 2.8" | 0 | 6 | 0 | 67° – 76° |
| June | 89° | 66° | 4.4" | 0 | 9 | 0 | 73° – 82° |
| July | 91° | 70° | 5.0" | 0 | 10 | 0 | 77° – 84° |
| August | 90° | 69° | 4.4" | 0 | 7 | 0 | 76° – 83° |
| September | 86° | 63° | 3.7" | 0 | 6 | 0 | 72° – 80° |
| October | 77° | 52° | 2.8" | 0 | 5 | 0 | 61° – 70° |
| November | 67° | 42° | 3.5" | 0 | 6 | 0 | 49° – 60° |
| December | 59° | 37° | 4.7" | 0 | 8 | 0 | 39° – 58° |
| Year | 76° | 52° | 48.2" | 0.3" | 88 | 0 |
“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 Knoxville
Knoxville gets 48 inches of rain and melted snow a year. July is the wettest month and May the driest. Rain or snow falls on about 88 days a year.
About 234 frost-free days a year
In half of years the last 32° night comes by March 23 and the first one by November 12. That leaves about 234 frost-free days for gardens, longer than 87% of U.S. towns.
Heating and cooling a home in Knoxville
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Knoxville, 56% of that work is heating and 44% 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.
How Knoxville 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 Knoxville averaged 0.7° warmer than the 1900s. The biggest change is in December (+1.9°). The shift is smaller than in 90% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Knoxville’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 39° to 58°. July is the most reliable, staying within 7°.
Common questions about Knoxville’s climate
What is the coldest month in Knoxville?
January, with a typical high of 58° and a low of 34°.
What is the hottest month in Knoxville?
July, with a typical high of 91° and a low of 70°. About 62 days a year reach 90°.
How much snow does Knoxville get?
Almost none. A normal year brings 0.3 inches.
When is the first frost in Knoxville?
In half of years the first 32° night comes by November 12, and the last spring frost by March 23.
What is the rainiest month in Knoxville?
July, with 5.0 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Knoxville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Thomaston 4se, GA (19 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.