Colonial Heights, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colonial Heights, a community in Sullivan County, Tennessee.
Today
87°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 87, with temperatures falling to around 82 in the afternoon. East wind around 0 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Colonial Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 46% |
| Tonight | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 57% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 51% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 53% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph SW | 50% |
| Friday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 47% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 47% |
| Saturday | 86°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 57% |
| Saturday Night | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 57% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 33% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 33% |
| Monday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 31% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 31% |
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 Aug 4, 2026.