Alcoa, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alcoa, a city in Blount County, Tennessee.
Today
89°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Northwest wind around 0 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Alcoa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 47% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 44% |
| Wednesday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 51% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 50% |
| Friday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 43% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 43% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 53% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Sunday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 39% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 39% |
| Monday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 39% |
| Monday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 39% |
Forecast source: National Weather Service (api.weather.gov) for Alcoa (35.807, -83.973). Updated through the day.
Growing snapshot for Alcoa
Last spring frost
Apr 1
First fall frost
Nov 2
Growing season
215 days
Hardiness zone
7b
More local growing data for Alcoa: nearby ZIP 37701 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Knoxville Mcghee Tyson Ap, Tn (1.8 mi from Alcoa). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.