Petersburg, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a town in Lincoln County, Tennessee.
Today
73°F
Showers And Thunderstorms
Showers and thunderstorms before 4pm. Mostly cloudy, with a high near 73. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Showers And Thunderstorms | 5 to 15 mph SW | 88% |
| Tonight | 47°F | Areas Of Fog | 0 mph | 0% |
| Thursday | 72°F | Areas Of Fog then Mostly Sunny | 0 mph | 0% |
| Thursday Night | 42°F | Areas Of Fog | 0 mph | 0% |
| Friday | 70°F | Areas Of Fog then Sunny | 0 to 5 mph NNW | 1% |
| Friday Night | 38°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 60°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Sunday Night | 31°F | Mostly Clear | 0 to 5 mph N | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph NNW | 0% |
| Monday Night | 32°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 66°F | Sunny | 0 to 5 mph WNW | 2% |
| Tuesday Night | 35°F | Mostly Clear | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov) for Petersburg (35.317, -86.641). Updated through the day.
Growing snapshot for Petersburg
Last spring frost
Apr 14
First fall frost
Oct 22
Growing season
192 days
Hardiness zone
7b
More local growing data for Petersburg: nearby ZIP 37144 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lewisburg Exp Stn, Tn (11.4 mi from Petersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.