Erwin, TN Weather & Growing Conditions
Today
78°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms likely. Mostly sunny, with a high near 78. Southeast wind around 0 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 76% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 46% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 78% |
| Wednesday Night | 63°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph S | 59% |
| Thursday | 78°F | Showers And Thunderstorms | 0 to 5 mph S | 92% |
| Thursday Night | 63°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph S | 92% |
| Friday | 79°F | Chance Showers And Thunderstorms | 0 mph | 72% |
| Friday Night | 64°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 72% |
| Saturday | 79°F | Slight Chance Showers And Thunderstorms | 0 mph | 78% |
| Saturday Night | 64°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 mph | 78% |
| Sunday | 79°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 56% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 56% |
| Monday | 79°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 48% |
| Monday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 48% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Erwin, TN
Last spring frost
Apr 21
First fall frost
Oct 23
Growing season
183 days
Hardiness zone
7a
Explore more for Erwin, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Erwin 1 W, Tn (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.