Petersburg, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a community in Mahoning County, Ohio.
Overnight
55°F
Mostly Clear
Mostly clear, with a low around 55. South wind around 7 mph.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Clear | 7 mph S | 1% |
| Wednesday | 77°F | Mostly Cloudy then Light Rain Likely | 6 to 10 mph S | 63% |
| Wednesday Night | 57°F | Light Rain | 7 to 13 mph S | 97% |
| Thursday | 68°F | Mostly Sunny | 6 to 12 mph SW | 3% |
| Thursday Night | 45°F | Partly Cloudy | 2 to 6 mph SW | 0% |
| Friday | 60°F | Chance Rain Showers | 2 to 7 mph SW | 30% |
| Friday Night | 40°F | Chance Rain Showers | 3 to 7 mph W | 46% |
| Saturday | 50°F | Chance Rain Showers | 7 to 10 mph W | 41% |
| Saturday Night | 33°F | Slight Chance Light Rain | 5 to 8 mph W | 36% |
| Sunday | 54°F | Mostly Sunny | 6 to 10 mph W | 6% |
| Sunday Night | 32°F | Partly Cloudy | 7 mph W | 5% |
| Monday | 56°F | Mostly Sunny | 6 to 10 mph W | 12% |
| Monday Night | 34°F | Mostly Clear | 3 to 7 mph SW | 12% |
| Tuesday | 60°F | Mostly Sunny | 8 to 12 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Petersburg (40.910, -80.534). Updated through the day.
Growing snapshot for Petersburg
Last spring frost
Apr 30
First fall frost
Oct 23
Growing season
175 days
Hardiness zone
6a
More local growing data for Petersburg: nearby ZIP 44454 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Austintown
Beloit
Campbell
Canfield
Craig Beach
Damascus
East Alliance
Lake Milton
Lowellville
Maple Ridge
Mineral Ridge
New Middletown
New Springfield
North Lima
Poland
Sebring
Struthers
Woodworth
Youngstown
Climate data from the nearest NOAA station, New Castle 1 N, Pa (11.6 mi from Petersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.