Grand Junction, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Junction, a city in Hardeman County, Tennessee.
This Afternoon
76°F
Mostly Sunny
Mostly sunny, with a high near 76. South southeast wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Grand Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 15 mph SSE | 3% |
| Tonight | 58°F | Showers And Thunderstorms | 5 to 15 mph SSW | 99% |
| Wednesday | 71°F | Mostly Sunny | 0 to 10 mph WSW | 6% |
| Wednesday Night | 44°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 72°F | Mostly Sunny | 0 mph | 0% |
| Thursday Night | 45°F | Partly Cloudy | 0 mph | 0% |
| Friday | 67°F | Mostly Sunny | 0 to 10 mph NNW | 0% |
| Friday Night | 39°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 61°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 35°F | Partly Cloudy | 0 mph | 1% |
| Sunday | 62°F | Mostly Sunny | 0 to 5 mph NNW | 5% |
| Sunday Night | 34°F | Mostly Clear | 0 mph | 3% |
| Monday | 65°F | Sunny | 0 to 5 mph WNW | 0% |
| Monday Night | 36°F | Mostly Clear | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov) for Grand Junction (35.050, -89.189). Updated through the day.
Growing snapshot for Grand Junction
Last spring frost
Apr 1
First fall frost
Nov 3
Growing season
217 days
Hardiness zone
7b
More local growing data for Grand Junction: nearby ZIP 38039 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ames Plantation, Tn (4.1 mi from Grand Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.