Petersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petersburg, a borough in Huntingdon County, Pennsylvania.
Today
83°F
Sunny
Sunny, with a high near 83. Southeast wind around 2 mph.
7-day forecast for Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 2 mph SE | 0% |
| Tonight | 65°F | Partly Cloudy | 0 to 3 mph E | 7% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 3 mph SE | 44% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms then Patchy Fog | 0 to 3 mph NE | 45% |
| Thursday | 85°F | Slight Chance Showers And Thunderstorms | 0 to 3 mph SW | 85% |
| Thursday Night | 70°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 mph NW | 85% |
| Friday | 85°F | Showers And Thunderstorms | 0 to 3 mph W | 80% |
| Friday Night | 67°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 mph W | 80% |
| Saturday | 85°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 53% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph W | 15% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 8 mph W | 23% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 2 to 7 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
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Allensville
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Huntingdon
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Mapleton
Marklesburg
McConnellstown
Mill Creek
Mount Union
Orbisonia
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Saltillo
Shade Gap
Shirleysburg
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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 Aug 4, 2026.