Petersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a borough in Huntingdon County, Pennsylvania.
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. Southeast wind around 3 mph.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 3 mph SE | 1% |
| Tonight | 47°F | Mostly Clear then Areas Of Fog | 0 to 3 mph E | 1% |
| Wednesday | 75°F | Areas Of Fog then Partly Sunny | 0 to 7 mph SE | 2% |
| Wednesday Night | 59°F | Mostly Cloudy then Rain Showers | 6 mph S | 96% |
| Thursday | 74°F | Rain Showers Likely | 2 to 6 mph S | 70% |
| Thursday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph NW | 20% |
| Friday | 69°F | Chance Rain Showers | 1 mph NW | 38% |
| Friday Night | 43°F | Slight Chance Rain Showers | 1 mph NW | 22% |
| Saturday | 61°F | Slight Chance Rain Showers | 1 to 8 mph NW | 23% |
| Saturday Night | 36°F | Slight Chance Rain Showers then Partly Cloudy | 2 to 6 mph NW | 23% |
| Sunday | 59°F | Mostly Sunny | 2 to 7 mph W | 9% |
| Sunday Night | 34°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph W | 16% |
| Monday | 59°F | Chance Rain Showers | 5 to 12 mph W | 25% |
| Monday Night | 33°F | Slight Chance Rain Showers then Partly Cloudy | 6 mph W | 23% |
Forecast source: National Weather Service (api.weather.gov) for Petersburg (40.573, -78.051). Updated through the day.
Growing snapshot for Petersburg
Last spring frost
Apr 19
First fall frost
Oct 28
Growing season
191 days
Hardiness zone
6b
More local growing data for Petersburg: nearby ZIP 16611 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Alexandria
Allenport
Allensville
Beavertown
Broad Top City
Burnt Cabins
Cassville
Cedar Crest
Coalmont
Dudley
Huntingdon
Kistler
Mapleton
Marklesburg
McConnellstown
Mill Creek
Mount Union
Orbisonia
Robertsdale
Rockhill
Saltillo
Shade Gap
Shirleysburg
Three Springs
Wood
Climate data from the nearest NOAA station, Raystown Lake 2, Pa (13.1 mi from Petersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.