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Tupper Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  | | | | | | | |
| Patchy Fog | Clearing | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy |
| Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 311 PM EDT Mon Oct 19 2026 
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Issued: 325 PM EDT Mon Oct 19 2026
Key Messages
- Dry weather with mild afternoon highs and cool morning lows will persist into the weekend.
Discussion
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Blocking pattern will result in surface high pressure and ridging being entrenched across the Great Lakes yielding quiet weather conditions through the week.
A surface high pressure will move across the northern Great Lakes into Quebec tonight and tomorrow. Light southwesterly winds today will become more east-northeasterly for tomorrow while remaining light. This shift in winds brin...