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Summitville Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Mostly Sunny | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear |
| Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 335 AM EDT Mon Oct 05 2026 
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Issued: 224 AM EDT Mon Oct 5 2026
Key Messages
1) A cold front brings scattered showers and gusty winds today, followed by clearing skies and colder temperatures tonight with patchy frost and localized freezing temperatures possible.
2) High pressure brings a cool and mostly sunny Tuesday, followed by a gradual warming trend and mainly dry conditions through the end of the week.
Discussion
... KEY MESSAGE 1...
A cold front pushes through this morning as a low pressure system slides across Ontario, bringing scattered showers from west...