Erwin, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Erwin, a town in Unicoi County, Tennessee.
This Afternoon
88°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny. High near 88, with temperatures falling to around 85 in the afternoon. North wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Erwin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 27% |
| Tonight | 68°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 20% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph W | 35% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 0 mph | 47% |
| Monday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 54% |
| Monday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph E | 57% |
| Tuesday | 81°F | Showers And Thunderstorms | 0 to 5 mph S | 84% |
| Tuesday Night | 63°F | Showers And Thunderstorms | 5 mph SE | 84% |
| Wednesday | 74°F | Showers And Thunderstorms Likely | 5 mph SE | 61% |
| Wednesday Night | 60°F | Showers And Thunderstorms Likely | 0 to 10 mph SE | 61% |
| Thursday | 75°F | Chance Rain Showers | 0 to 5 mph S | 46% |
| Thursday Night | 58°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 46% |
| Friday | 74°F | Chance Rain Showers | 0 to 5 mph SW | 26% |
| Friday Night | 56°F | Slight Chance Rain Showers | 0 to 5 mph NE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Erwin (36.146, -82.412). Updated through the day.
Growing snapshot for Erwin
Last spring frost
Apr 21
First fall frost
Oct 23
Growing season
183 days
Hardiness zone
7a
More local growing data for Erwin: nearby ZIP 37650 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Erwin 1 W, Tn (4.4 mi from Erwin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.