Blaine, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blaine, a city in Grainger County, Tennessee.
Tonight
69°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 69. East wind around 0 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Blaine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 20% |
| Sunday | 92°F | Sunny | 0 to 5 mph SW | 14% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 15% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 42% |
| Monday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 57% |
| Tuesday | 86°F | Showers And Thunderstorms | 0 mph | 81% |
| Tuesday Night | 65°F | Showers And Thunderstorms | 0 mph | 81% |
| Wednesday | 81°F | Showers And Thunderstorms | 0 mph | 86% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 0 mph | 86% |
| Thursday | 78°F | Rain Showers Likely | 0 to 5 mph N | 56% |
| Thursday Night | 59°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph N | 41% |
| Friday | 78°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 16% |
| Friday Night | 56°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 16% |
| Saturday | 78°F | Mostly Sunny | 0 to 5 mph NE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Blaine (36.145, -83.696). Updated through the day.
Growing snapshot for Blaine
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
7b
More local growing data for Blaine: nearby ZIP 37709 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jefferson City, Tn (11.1 mi from Blaine). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.