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St. Marks School Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  | |  | | |  |  | |
| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Sunny | Mostly Cloudy | Partly Sunny | Showers | Showers | Rain Showers | Mostly Sunny | Clear | Sunny |
| Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C |
| POP: 60% | POP: 70% | POP: 50% | POP: 80% | POP: 90% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM EDT Mon Oct 12 2026 
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Issued: 147 PM EDT Mon Oct 12 2026
Key Messages
1) Round of showers arrives late tonight with thunderstorms possible Tuesday.
2) Colder weather by the end of the week with some potential for snow.
Discussion
... KEY MESSAGE 1...Round of showers arrives late tonight with thunderstorms possible Tuesday.
Surface low will move east across the Great Lakes late tonight and Tuesday, supporting a cold front which will pass southeast across the region Tuesday evening. A leading shortwave trough, just ahead of the front, will support a round of...