Colonial Heights, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colonial Heights, a community in Sullivan County, Tennessee.
Tonight
67°F
Scattered Showers And Thunderstorms then Partly Cloudy
Scattered showers and thunderstorms before midnight. Partly cloudy, with a low around 67. East wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Colonial Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Scattered Showers And Thunderstorms then Partly Cloudy | 0 mph | 38% |
| Saturday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 19% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 0 mph | 29% |
| Sunday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 53% |
| Monday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 52% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 52% |
| Tuesday | 84°F | Showers And Thunderstorms | 0 to 5 mph S | 80% |
| Tuesday Night | 62°F | Showers And Thunderstorms | 5 mph E | 80% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 5 mph SE | 60% |
| Wednesday Night | 59°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 60% |
| Thursday | 76°F | Chance Rain Showers | 0 to 5 mph NE | 33% |
| Thursday Night | 56°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 24% |
| Friday | 77°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 16% |
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 Sep 19, 2026.