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Big Flat Trail Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  | | | | | | | |
| Chance of Showers | Chance of T-Storm | Partly Cloudy | Mostly Sunny | Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 41°FLo: 5°C | Hi: 51°FHi: 11°C | Lo: 31°FLo: -1°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 60°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C |
| POP: 50% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 301 AM EDT Fri Oct 16 2026 
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Issued: 503 PM EDT Thu Oct 15 2026
Key Messages
1) Potent storm system moves across PA tonight and Fri with a severe threat Fri aftn/eve.
2) Windy with first flakes on the higher terrain of the north Fri night/Sat morning
3) Cold weather may end the growing season for many places this weekend, with Sun morning the coldest.
Discussion
... KEY MESSAGE 1: Potent storm system moves across PA tonight and Fri with a severe threat Fri aftn/eve.
A surface low moving through the Midwest will cross the Great Lakes tonight and Friday. Showers and...