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Thunder Lake Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
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| Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Clear | Snow Showers | Rain/Snow Showers | Chance of T-Storm | Rain/Snow Showers | Snow Showers | Partly Cloudy | Partly Cloudy |
| Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C | Lo: 40°FLo: 4°C | Hi: 53°FHi: 12°C | Lo: 33°FLo: 1°C | Hi: 46°FHi: 8°C | Lo: 31°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 30°FLo: -1°C | Hi: 46°FHi: 8°C | Hi: 47°FHi: 8°C Lo: 28°FLo: -2°C | Hi: 47°FHi: 8°C Lo: 28°FLo: -2°C |
| POP: 30% | POP: 50% | POP: 50% | POP: 20% | POP: 60% | POP: 70% | POP: 50% | POP: 50% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 605 PM MDT Wed Oct 21 2026 
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Issued: 525 PM MDT Wed Oct 21 2026
Key Messages
- Warm and dry conditions continue across the lower elevations for the next few days, with scattered light rain and snow showers across the higher elevations.
- Cooler, more unsettled weather returns this weekend across the forecast area.
- At least a brief warm-up likely sometime early next week.
Discussion
/Through Wednesday/... Issued at 131 PM MDT Wed Oct 21 2026
The upper level ridging over the area is moving east away from the area today as an upper level trough begins to move onto the ...