Petersburg, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a town in Lincoln County, Tennessee.
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 104. North wind around 5 mph.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 5 mph N | 10% |
| Tonight | 71°F | Mostly Clear | 0 mph | 10% |
| Saturday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 24% |
| Saturday Night | 70°F | Mostly Clear | 0 mph | 12% |
| Sunday | 97°F | Sunny | 0 to 5 mph SW | 10% |
| Sunday Night | 69°F | Partly Cloudy | 0 mph | 10% |
| Monday | 96°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 30% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph SSE | 48% |
| Tuesday | 92°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph WSW | 58% |
| Tuesday Night | 64°F | Showers And Thunderstorms Likely | 0 to 5 mph NNE | 58% |
| Wednesday | 84°F | Chance Rain Showers | 0 to 5 mph N | 25% |
| Wednesday Night | 60°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph NNE | 25% |
| Thursday | 83°F | Mostly Sunny | 0 to 5 mph N | 10% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph NNE | 10% |
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 Sep 19, 2026.