Weather WorldHeron Lake, MT Weather Forecast
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Heron Lake Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Chance of Showers | Chance of T-Storm | Smoke | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of Showers | Mostly Clear | Mostly Clear |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Sat Aug 22 2026 
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Issued: 644 PM MDT Sat Aug 22 2026
Key Messages
- Scattered showers and thunderstorms this afternoon capable of briefly heavy rainfall and gusty winds.
- Additional scattered showers and thunderstorms Sunday afternoon and early evening ahead of a cold front bringing drier and breezy conditions.
- Cooler in most areas Monday before temperatures trend closer to, if not above average by mid-week. A few showers and thunderstorms will be around most days next week, primarily across Southwest MT.