Petersburg, KY Weather & Growing Conditions
Today
89°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 3pm and 5pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 89. South wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 8 mph S | 66% |
| Tonight | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph S | 71% |
| Sunday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph SW | 25% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 9 mph N | 54% |
| Monday | 75°F | Chance Rain Showers | 10 mph NE | 54% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 54% |
| Tuesday | 72°F | Chance Showers And Thunderstorms | 8 mph NE | 36% |
| Tuesday Night | 58°F | Chance Showers And Thunderstorms | 5 to 9 mph N | 37% |
| Wednesday | 72°F | Chance Rain Showers | 6 mph N | 42% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 42% |
| Thursday | 72°F | Partly Sunny | 3 to 7 mph N | 14% |
| Thursday Night | 56°F | Mostly Cloudy | 3 to 7 mph N | 14% |
| Friday | 73°F | Mostly Sunny | 5 to 8 mph NE | 6% |
| Friday Night | 53°F | Partly Cloudy | 7 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Petersburg, KY
Last spring frost
Apr 13
First fall frost
Oct 31
Growing season
197 days
Hardiness zone
6b
Explore more for Petersburg, KY: full frost dates · planting calendar · Kentucky frost dates
Climate data from the nearest NOAA station, Cincinnati-Fernbank, Oh (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.