Weather World
Blue Knob Valley, PA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Blue Knob Valley Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  | |  | | | |  | |  |
| Chance of T-Storm | Patchy Fog | Sunny | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy |
| Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C |
| POP: 100% | POP: 50% | POP: 80% | POP: 80% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 730 AM EDT Thu Aug 20 2026 
Blue Knob Valley Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Blue Knob Valley Weather Map
Blue Knob Valley Quick Facts
Blue Knob Valley Forecast Discussion
Issued: 639 AM EDT Thu Aug 20 2026
Key Messages
1) Locally heavy rain and a few strong thunderstorms possible across south central Pennsylvania today.
2) An unsettled weekend will be bookended by dry and sunny weather on Friday and early next week.
Discussion
... KEY MESSAGE 1: Locally heavy rain and a few strong thunderstorms possible across south central Pennsylvania today
A low pressure system centered in the Ohio Valley this morning will drift east today, bringing a period of unsettled weather across ...