Grimsley, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grimsley, a community in Fentress County, Tennessee.
Today
86°F
Patchy Fog then Chance Showers And Thunderstorms
Patchy fog before 9am, then a chance of showers and thunderstorms. Mostly sunny. High near 86, with temperatures falling to around 81 in the afternoon. Northeast wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grimsley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Patchy Fog then Chance Showers And Thunderstorms | 0 mph | 31% |
| Tonight | 67°F | Chance Showers And Thunderstorms then Patchy Fog | 0 mph | 33% |
| Wednesday | 84°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 57% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 27% |
| Thursday | 85°F | Chance Showers And Thunderstorms | 5 mph SSW | 59% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely then Partly Cloudy | 5 mph S | 59% |
| Friday | 86°F | Showers And Thunderstorms Likely | 5 mph SSW | 62% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 62% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 70% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 70% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 50% |
| Monday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 36% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 36% |
Forecast source: National Weather Service (api.weather.gov) for Grimsley (36.276, -84.997). Updated through the day.
Growing snapshot for Grimsley
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
7a
More local growing data for Grimsley: nearby ZIP 38565 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allardt, Tn (11.1 mi from Grimsley). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.