Petrolia, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petrolia, a borough in Butler County, Pennsylvania.
This Afternoon
76°F
Mostly Sunny
Mostly sunny, with a high near 76. North wind around 6 mph.
7-day forecast for Petrolia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 6 mph N | 10% |
| Tonight | 54°F | Partly Cloudy | 5 mph NE | 10% |
| Saturday | 75°F | Partly Sunny | 6 mph E | 14% |
| Saturday Night | 61°F | Mostly Cloudy then Showers And Thunderstorms | 6 mph SE | 76% |
| Sunday | 75°F | Showers And Thunderstorms | 7 mph SW | 96% |
| Sunday Night | 54°F | Showers And Thunderstorms Likely | 8 mph N | 74% |
| Monday | 68°F | Chance Rain Showers | 9 mph NE | 26% |
| Monday Night | 52°F | Rain Showers Likely | 8 to 12 mph E | 55% |
| Tuesday | 64°F | Showers And Thunderstorms Likely | 12 mph E | 64% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 14 mph E | 63% |
| Wednesday | 62°F | Rain Showers Likely | 13 mph E | 63% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 12 mph E | 53% |
| Thursday | 64°F | Chance Rain Showers | 9 mph E | 44% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 7 mph NE | 20% |
Forecast source: National Weather Service (api.weather.gov) for Petrolia (41.022, -79.717). Updated through the day.
Growing snapshot for Petrolia
Last spring frost
May 7
First fall frost
Oct 14
Growing season
159 days
Hardiness zone
6a
More local growing data for Petrolia: nearby ZIP 16041 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Butler 2 Sw, Pa (15.6 mi from Petrolia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.