Big Run, PA Weather & Growing Conditions
This Afternoon
77°F
Mostly Sunny
Mostly sunny. High near 77, with temperatures falling to around 71 in the afternoon. South wind 3 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Mostly Sunny | 3 to 7 mph S | 2% |
| Tonight | 50°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 75°F | Partly Sunny | 5 to 8 mph SE | 3% |
| Wednesday Night | 59°F | Light Rain | 9 mph S | 99% |
| Thursday | 69°F | Light Rain Likely | 6 to 12 mph SW | 65% |
| Thursday Night | 47°F | Mostly Cloudy | 1 to 5 mph SW | 9% |
| Friday | 64°F | Partly Sunny | 1 to 5 mph W | 14% |
| Friday Night | 43°F | Chance Light Rain | 1 to 5 mph NW | 25% |
| Saturday | 55°F | Chance Light Rain | 5 to 10 mph W | 34% |
| Saturday Night | 36°F | Chance Light Rain then Mostly Cloudy | 7 mph W | 34% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Sunday Night | 34°F | Slight Chance Light Rain | 7 to 10 mph W | 23% |
| Monday | 54°F | Chance Light Rain | 10 to 14 mph W | 33% |
| Monday Night | 35°F | Chance Light Rain | 7 to 12 mph SW | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Run, PA
Last spring frost
May 6
First fall frost
Oct 14
Growing season
160 days
Hardiness zone
6a
Explore more for Big Run, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Dubois Jefferson Co Ap, Pa (14.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.