Grand Junction, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Junction, a city in Hardeman County, Tennessee.
Overnight
61°F
Chance Rain Showers
A chance of rain showers before 5am. Mostly cloudy, with a low around 61. Southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Grand Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Chance Rain Showers | 5 mph SW | 44% |
| Wednesday | 69°F | Partly Sunny | 0 to 10 mph W | 5% |
| Wednesday Night | 44°F | Mostly Clear | 0 mph | 0% |
| Thursday | 72°F | Sunny | 0 mph | 0% |
| Thursday Night | 45°F | Mostly Clear | 0 mph | 0% |
| Friday | 67°F | Sunny | 0 to 10 mph N | 0% |
| Friday Night | 40°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 59°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 59°F | Mostly Sunny | 0 to 10 mph N | 1% |
| Sunday Night | 34°F | Mostly Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 5 mph NNW | 1% |
| Monday Night | 36°F | Mostly Clear | 0 mph | 1% |
| Tuesday | 68°F | Sunny | 0 to 5 mph W | 1% |
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.