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Grandview School Weather Forecast
| REST OF TONIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  |  |  |  | |  |  |  |  |
| Patchy Fog | Clouds | Partly Cloudy | Mostly Sunny | Clear | Showers Likely | Showers | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 39°FLo: 4°C | Hi: 50°FHi: 10°C |
| POP: 70% | POP: 70% | POP: 40% | POP: 80% | POP: 80% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1133 PM EDT Sun Oct 11 2026 
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Issued: 159 AM EDT Mon Oct 12 2026
Key Messages
1) Remnants from Isaias depart this morning, clouds will decrease in coverage this afternoon.
2) Rain chances return mid-week; impactful weather is possible Friday/Saturday with a strong low pressure system.
Discussion
... KEY MESSAGE 1... A few stray showers are noted near the ridges due to orographic lift and greatest proximity to coastal low development, but median 24hr rain through 2pm Monday sits only around an additional 0.1 to 0.25 inches east of Pittsburgh. Creeks and streams ma...