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Brennen Lake, MN Weather Forecast
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Brennen Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  |  |  | | |  | | | |
| Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Partly Cloudy | Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Partly Cloudy |
| Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C |
| POP: 70% | POP: 20% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 635 AM CDT Thu Aug 20 2026 
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Brennen Lake Forecast Discussion
Issued: 631 AM CDT Thu Aug 20 2026
Key Messages
- Showers and thunderstorms are expected today, with a few severe storms possible in portions of east-central MN and northwest WI this afternoon and evening. The primary hazard is large hail up to 1.5 inches in diameter.
- Scattered showers will be possible on Friday afternoon, mainly in the Arrowhead and near the International Border.
- Pleasant weather conditions are forecast this weekend with comfortable high temps in the 70s for most and abundant sunshine....