Big Run, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Run, a borough in Jefferson County, Pennsylvania.
Tonight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. Northeast wind around 5 mph.
7-day forecast for Big Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Partly Cloudy | 5 mph NE | 5% |
| Saturday | 73°F | Partly Sunny | 6 mph E | 4% |
| Saturday Night | 61°F | Mostly Cloudy then Showers And Thunderstorms Likely | 8 mph SE | 68% |
| Sunday | 73°F | Showers And Thunderstorms | 7 mph SW | 98% |
| Sunday Night | 54°F | Rain Showers | 7 mph N | 82% |
| Monday | 66°F | Chance Rain Showers | 9 mph NE | 28% |
| Monday Night | 52°F | Showers And Thunderstorms Likely | 12 mph E | 62% |
| Tuesday | 61°F | Showers And Thunderstorms Likely | 13 mph E | 67% |
| Tuesday Night | 49°F | Showers And Thunderstorms Likely | 15 mph E | 62% |
| Wednesday | 59°F | Rain Showers Likely | 14 mph E | 62% |
| Wednesday Night | 49°F | Chance Showers And Thunderstorms | 10 to 14 mph E | 52% |
| Thursday | 61°F | Chance Showers And Thunderstorms | 10 mph E | 50% |
| Thursday Night | 49°F | Chance Rain Showers | 3 to 7 mph E | 33% |
| Friday | 68°F | Slight Chance Rain Showers | 7 mph NE | 22% |
Forecast source: National Weather Service (api.weather.gov) for Big Run (40.971, -78.877). Updated through the day.
Growing snapshot for Big Run
Last spring frost
May 6
First fall frost
Oct 14
Growing season
160 days
Hardiness zone
6a
More local growing data for Big Run: nearby ZIP 15715 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Brockway
Brookville
Corsica
Falls Creek
Punxsutawney
Reynoldsville
Summerville
Sykesville
Timblin
Worthville
Climate data from the nearest NOAA station, Dubois Jefferson Co Ap, Pa (14.4 mi from Big Run). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.