Big Run, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Run, a borough in Jefferson County, Pennsylvania.
Today
82°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 82. Southeast wind around 3 mph.
7-day forecast for Big Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Patchy Fog then Sunny | 3 mph SE | 0% |
| Tonight | 63°F | Mostly Clear | 3 mph E | 0% |
| Wednesday | 82°F | Partly Sunny then Scattered Showers And Thunderstorms | 6 mph SE | 42% |
| Wednesday Night | 66°F | Scattered Showers And Thunderstorms | 5 mph SE | 41% |
| Thursday | 82°F | Showers And Thunderstorms | 2 to 6 mph SW | 83% |
| Thursday Night | 66°F | Showers And Thunderstorms | 1 to 5 mph SW | 83% |
| Friday | 81°F | Showers And Thunderstorms | 2 to 6 mph SW | 82% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 5 mph SW | 82% |
| Saturday | 80°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 7 mph SW | 49% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 49% |
| Sunday | 82°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 22% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 22% |
| Monday | 82°F | Chance Showers And Thunderstorms | 7 to 10 mph W | 44% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 3 to 8 mph W | 49% |
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 Aug 4, 2026.