New Union, TN climate
New Union has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 87°, a January night drops to 28°, and about 3 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in New Union feels like
Winter
Spring
Summer
Fall
New Union 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 | 48° | 28° | 5.2" | 0.9" | 12 | 1 | 30° – 46° |
| February | 52° | 31° | 5.1" | 1.1" | 12 | 1 | 31° – 50° |
| March | 61° | 38° | 5.6" | 0.8" | 13 | 0 | 43° – 60° |
| April | 70° | 45° | 5.2" | 0 | 11 | 0 | 52° – 63° |
| May | 78° | 54° | 5.0" | 0 | 11 | 0 | 60° – 70° |
| June | 85° | 62° | 5.0" | 0 | 11 | 0 | 70° – 77° |
| July | 87° | 66° | 4.8" | 0 | 12 | 0 | 73° – 80° |
| August | 87° | 64° | 4.2" | 0 | 9 | 0 | 71° – 82° |
| September | 82° | 57° | 4.3" | 0 | 8 | 0 | 66° – 75° |
| October | 72° | 46° | 3.6" | 0 | 9 | 0 | 55° – 64° |
| November | 60° | 36° | 4.4" | 0 | 9 | 0 | 42° – 54° |
| December | 51° | 31° | 6.1" | 0 | 13 | 0 | 31° – 52° |
| Year | 69° | 47° | 58.4" | 2.8" | 130 | 2 |
“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 New Union
New Union gets 58 inches of rain and melted snow a year. December is the wettest month and October the driest. Rain or snow falls on about 130 days a year.
About 192 frost-free days a year
In half of years the last 32° night comes by April 13 and the first one by October 24. That leaves about 192 frost-free days for gardens, longer than 66% of U.S. towns.
Heating and cooling a home in New Union
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In New Union, 79% of that work is heating and 21% 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 New Union 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 New Union averaged 0.7° warmer than the 1900s. The biggest change is in February (+1.6°). The shift is smaller than in 90% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at New Union’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 31° to 52°. July is the most reliable, staying within 7°.
Common questions about New Union’s climate
What is the coldest month in New Union?
January, with a typical high of 48° and a low of 28°.
What is the hottest month in New Union?
July, with a typical high of 87° and a low of 66°. About 23 days a year reach 90°.
How much snow does New Union get?
About 3 inches in a normal winter, most of it in February.
When is the first frost in New Union?
In half of years the first 32° night comes by October 24, and the last spring frost by April 13.
What is the rainiest month in New Union?
December, with 6.1 inches of rain and melted snow. The year totals 58 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for New Union itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Tullahoma, TN (15 mi, snow) and Manchester #2, TN (1 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.