Alpine, ID Weather Forecast
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Alpine Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
| Increasing Clouds | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny |
| Lo: 53°FLo: 12°C | Hi: 74°FHi: 23°C | Lo: 53°FLo: 12°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 54°FLo: 12°C | Hi: 79°FHi: 26°C Lo: 54°FLo: 12°C | Hi: 79°FHi: 26°C Lo: 54°FLo: 12°C | Hi: 79°FHi: 26°C Lo: 54°FLo: 12°C | Hi: 78°FHi: 26°C |
| POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM MDT Thu Sep 17 2026 

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Issued: 622 PM MDT Thu Sep 17 2026
Key Messages
- Upper low pressure approaching from ne California will bring showers, scattered strong thunderstorms, and cooler temperatures through Friday.
- Strongest thunderstorms in central Idaho with gusty outflow winds, hail, and brief heavy rain.
- Gradual warming and drying trend beginning Saturday and continuing through at least Tuesday.
Aviation
/00Z Friday through Saturday/... Issued 622 PM MDT THU SEP 17 2026
VFR. Isolated rain showers overnight, with isolated to scattered showers and thunders...
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