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
66°F
Clear
Clear, with a low around 66. Wind around 0 mph.
7-day forecast for Grand Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Clear | 0 mph | 0% |
| Tuesday | 87°F | Sunny | 0 to 5 mph NNE | 0% |
| Tuesday Night | 68°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Wednesday | 90°F | Sunny | 0 mph | 4% |
| Wednesday Night | 70°F | Mostly Clear | 0 mph | 2% |
| Thursday | 93°F | Sunny | 0 to 5 mph SW | 5% |
| Thursday Night | 73°F | Partly Cloudy | 0 mph | 9% |
| Friday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 22% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 22% |
| Saturday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 37% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 37% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 23% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 23% |
| Monday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 15% |
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 Aug 4, 2026.