Grand Junction, TN climate
Grand Junction has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 30°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Grand Junction feels like
Winter
Spring
Summer
Fall
Grand Junction 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 | 49° | 30° | 4.5" | 0.6" | 7 | 1 | 33° – 47° |
| February | 54° | 34° | 5.0" | 1.0" | 7 | 1 | 34° – 53° |
| March | 63° | 41° | 5.7" | 0.2" | 7 | 0 | 46° – 62° |
| April | 72° | 49° | 5.6" | 0.1" | 7 | 0 | 54° – 66° |
| May | 80° | 58° | 5.5" | 0 | 7 | 0 | 65° – 75° |
| June | 87° | 66° | 4.7" | 0 | 6 | 0 | 73° – 81° |
| July | 90° | 69° | 4.5" | 0 | 7 | 0 | 74° – 82° |
| August | 90° | 68° | 3.6" | 0 | 5 | 0 | 74° – 85° |
| September | 84° | 61° | 3.8" | 0 | 6 | 0 | 69° – 78° |
| October | 73° | 49° | 4.0" | 0 | 6 | 0 | 58° – 67° |
| November | 61° | 39° | 4.2" | 0 | 6 | 0 | 44° – 55° |
| December | 52° | 33° | 5.8" | 0 | 7 | 0 | 32° – 52° |
| Year | 71° | 50° | 56.8" | 1.9" | 75 | 1 |
“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 Grand Junction
Grand Junction gets 57 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 75 days a year.
About 217 frost-free days a year
In half of years the last 32° night comes by April 1 and the first one by November 3. That leaves about 217 frost-free days for gardens, longer than 81% of U.S. towns.
Heating and cooling a home in Grand Junction
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Grand Junction, 63% of that work is heating and 37% 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 Grand Junction 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 Grand Junction averaged 0.9° warmer than the 1900s. The biggest change is in February (+1.8°). The shift is smaller than in 79% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Grand Junction’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 32° to 52°. July is the most reliable, staying within 8°.
Common questions about Grand Junction’s climate
What is the coldest month in Grand Junction?
January, with a typical high of 49° and a low of 30°.
What is the hottest month in Grand Junction?
July, with a typical high of 90° and a low of 69°. About 67 days a year reach 90°.
How much snow does Grand Junction get?
About 2 inches in a normal winter, most of it in February.
When is the first frost in Grand Junction?
In half of years the first 32° night comes by November 3, and the last spring frost by April 1.
What is the rainiest month in Grand Junction?
December, with 5.8 inches of rain and melted snow. The year totals 57 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Grand Junction itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Moscow, TN (13 mi, snow) and Ames Plantation, TN (5 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.