Petersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a borough in Huntingdon County, Pennsylvania.
Today
76°F
Patchy Fog then Mostly Sunny
Patchy fog before 10am. Mostly sunny. High near 76, with temperatures falling to around 70 in the afternoon. Southeast wind 0 to 8 mph.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Patchy Fog then Mostly Sunny | 0 to 8 mph SE | 1% |
| Tonight | 59°F | Light Rain | 6 mph SE | 92% |
| Thursday | 74°F | Light Rain Likely | 3 to 7 mph SW | 59% |
| Thursday Night | 47°F | Mostly Cloudy | 2 mph W | 5% |
| Friday | 68°F | Partly Sunny | 2 mph W | 11% |
| Friday Night | 43°F | Partly Cloudy | 2 mph W | 9% |
| Saturday | 57°F | Slight Chance Light Rain | 1 to 9 mph W | 23% |
| Saturday Night | 36°F | Slight Chance Light Rain then Mostly Cloudy | 8 mph W | 21% |
| Sunday | 58°F | Partly Sunny | 6 to 9 mph W | 6% |
| Sunday Night | 34°F | Partly Cloudy | 7 mph W | 5% |
| Monday | 58°F | Mostly Sunny | 5 to 10 mph W | 9% |
| Monday Night | 33°F | Mostly Clear | 2 to 6 mph W | 5% |
| Tuesday | 62°F | Mostly Sunny | 3 to 10 mph W | 2% |
| Tuesday Night | 32°F | Partly Cloudy | 2 to 6 mph W | 1% |
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 4, 2026.