Sullivan Gardens, TN climate
Sullivan Gardens has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 28°, and about 5 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sullivan Gardens feels like
Winter
Spring
Summer
Fall
Sullivan Gardens 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 | 47° | 28° | 3.7" | 1.7" | 12 | 2 | 29° – 45° |
| February | 51° | 31° | 3.9" | 1.6" | 12 | 1 | 30° – 49° |
| March | 60° | 37° | 4.3" | 0.7" | 13 | 1 | 42° – 59° |
| April | 70° | 44° | 4.1" | 0 | 12 | 0 | 52° – 62° |
| May | 78° | 53° | 3.9" | 0 | 12 | 0 | 60° – 70° |
| June | 84° | 61° | 4.0" | 0 | 12 | 0 | 69° – 76° |
| July | 87° | 65° | 4.8" | 0 | 13 | 0 | 72° – 79° |
| August | 86° | 64° | 3.6" | 0 | 10 | 0 | 71° – 80° |
| September | 81° | 58° | 3.0" | 0 | 9 | 0 | 66° – 75° |
| October | 71° | 46° | 2.7" | 0 | 8 | 0 | 54° – 64° |
| November | 59° | 35° | 3.2" | 0.1" | 10 | 0 | 41° – 53° |
| December | 50° | 30° | 4.2" | 1.0" | 12 | 1 | 30° – 51° |
| Year | 69° | 46° | 45.4" | 5.1" | 133 | 4 |
“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 Sullivan Gardens
Sullivan Gardens gets 45 inches of rain and melted snow a year. July is the wettest month and October the driest. Rain or snow falls on about 133 days a year.
About 203 frost-free days a year
In half of years the last 32° night comes by April 9 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 Sullivan Gardens
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sullivan Gardens, 76% of that work is heating and 24% 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.
Sullivan Gardens and its neighbors
Sullivan Gardens borders 1 town with climate data. January nights across them vary by 0.1°. Kingsport has both the coldest January nights (28°) and the hottest July afternoons (87°). Sullivan Gardens’s January low is 28° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Sullivan Gardens 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 Sullivan Gardens averaged 0.8° warmer than the 1900s. The biggest change is in December (+1.7°). The shift is smaller than in 87% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sullivan Gardens’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 30° to 51°. June is the most reliable, staying within 7°.
Common questions about Sullivan Gardens’s climate
What is the coldest month in Sullivan Gardens?
January, with a typical high of 47° and a low of 28°.
What is the hottest month in Sullivan Gardens?
July, with a typical high of 87° and a low of 65°. About 28 days a year reach 90°.
How much snow does Sullivan Gardens get?
About 5 inches in a normal winter, most of it in January.
When is the first frost in Sullivan Gardens?
In half of years the first 32° night comes by October 29, and the last spring frost by April 9.
What is the rainiest month in Sullivan Gardens?
July, with 4.8 inches of rain and melted snow. The year totals 45 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sullivan Gardens itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Kingsport, TN (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.