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Arrowhead Lake Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Partly Cloudy | Showers Likely | Showers Likely | Partly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C |
| POP: 100% | POP: 100% | POP: 50% | POP: 60% | POP: 60% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 717 AM EDT Sat Oct 10 2026 
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Issued: 725 AM EDT Sat Oct 10 2026
Key Messages
1) Periods of moderate to heavy rain and breezy conditions are expected tonight through Sunday associated with the remnants of Isaias. Winds will be highest along the Erie lakeshore where gusts of 35-40 mph are possible.
2) A cold front will move south across the area Tuesday afternoon bringing a chance of showers and thunderstorms.
Discussion
... KEY MESSAGE 1... Skies will be mostly cloudy today with a mix of mid and high level clouds. Isaias made landfall last evening as a Hurricane ...