Weather WorldBig Run School, PA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Big Run School Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  |  |  |  | | | |  | | |
| Sunny | Mostly Clear | Showers Likely | Showers | Chance of T-Storm | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers |
| Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C |
| POP: 70% | POP: 90% | POP: 50% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1030 AM EDT Fri Aug 21 2026 
Big Run School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Big Run School Weather Map
Big Run School Quick Facts
Big Run School Forecast Discussion
Issued: 427 AM EDT Fri Aug 21 2026
Key Messages
1) Widespread Dense Fog until 10 AM today throughout the Valleys of Central and Northern PA, including the Laurel Highlands and Middle Susquehanna Valley.
2) An unsettled weekend will be bookended by fair weather Friday and early next week.
Discussion
... KEY MESSAGE 1: Widespread Dense Fog until 10 AM today throughout the Valleys of Central and Northern PA, including the Laurel Highlands and Middle Susquehanna Valley.
Moist ground from the widespread moderate to heavy rainfall amounts o...