Colonial Heights, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colonial Heights, a community in Sullivan County, Tennessee.
This Afternoon
79°F
Sunny
Sunny. High near 79, with temperatures falling to around 75 in the afternoon. South wind 5 to 10 mph.
7-day forecast for Colonial Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 5 to 10 mph S | 1% |
| Tonight | 58°F | Mostly Clear | 5 to 10 mph SE | 3% |
| Wednesday | 73°F | Showers And Thunderstorms | 5 to 10 mph SE | 84% |
| Wednesday Night | 61°F | Showers And Thunderstorms | 0 to 5 mph S | 91% |
| Thursday | 74°F | Chance Rain Showers | 0 to 5 mph W | 40% |
| Thursday Night | 53°F | Chance Rain Showers | 0 mph | 25% |
| Friday | 70°F | Chance Rain Showers then Mostly Sunny | 0 to 5 mph W | 25% |
| Friday Night | 45°F | Partly Cloudy | 0 to 5 mph NW | 9% |
| Saturday | 63°F | Partly Sunny | 0 to 5 mph NW | 5% |
| Saturday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 2% |
| Sunday | 62°F | Partly Sunny | 0 to 5 mph W | 5% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Monday | 62°F | Mostly Sunny | 0 to 10 mph SW | 14% |
| Monday Night | 33°F | Mostly Clear | 0 to 5 mph NW | 11% |
Forecast source: National Weather Service (api.weather.gov) for Colonial Heights (36.494, -82.491). Updated through the day.
Growing snapshot for Colonial Heights
Last spring frost
Apr 9
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
7b
More local growing data for Colonial Heights: nearby ZIP 37664 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kingsport, Tn (1.2 mi from Colonial Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.