Petersburg, TN Weather & Growing Conditions
Today
87°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. North northeast wind 0 to 5 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph NNE | 26% |
| Tonight | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 19% |
| Wednesday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 52% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 47% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 22% |
| Thursday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 22% |
| Friday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 38% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 mph | 38% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms | 0 mph | 56% |
| Saturday Night | 70°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 56% |
| Sunday | 89°F | Chance Showers And Thunderstorms | 0 mph | 39% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 39% |
| Monday | 89°F | Chance Showers And Thunderstorms | 0 mph | 33% |
| Monday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Petersburg, TN
Last spring frost
Apr 14
First fall frost
Oct 22
Growing season
192 days
Hardiness zone
7b
Explore more for Petersburg, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Lewisburg Exp Stn, Tn (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.