Grand Junction, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Junction, a city in Hardeman County, Tennessee.
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Wind around 0 mph.
7-day forecast for Grand Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 0 mph | 1% |
| Saturday | 99°F | Sunny | 0 mph | 2% |
| Saturday Night | 73°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 99°F | Sunny | 0 to 5 mph WSW | 2% |
| Sunday Night | 73°F | Partly Cloudy | 0 mph | 2% |
| Monday | 97°F | Mostly Sunny | 0 to 5 mph WSW | 8% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 18% |
| Tuesday | 91°F | Mostly Sunny | 0 to 10 mph N | 14% |
| Tuesday Night | 64°F | Partly Cloudy | 5 to 10 mph N | 13% |
| Wednesday | 85°F | Sunny | 5 to 10 mph NNE | 8% |
| Wednesday Night | 62°F | Mostly Clear | 5 to 10 mph NNE | 8% |
| Thursday | 84°F | Sunny | 5 to 10 mph NNE | 5% |
| Thursday Night | 61°F | Mostly Clear | 0 to 10 mph NNE | 5% |
| Friday | 84°F | Sunny | 5 to 10 mph NNE | 5% |
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 Sep 19, 2026.