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City of Ammon, IdahoAmmon, ID Weather Forecast
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Ammon Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | | | |  | | | | |  |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Hi: 70°FHi: 21°C | Lo: 42°FLo: 6°C | Hi: 71°FHi: 22°C | Lo: 43°FLo: 6°C | Hi: 72°FHi: 22°C | Lo: 45°FLo: 7°C | Hi: 74°FHi: 23°C Lo: 46°FLo: 8°C | Hi: 74°FHi: 23°C Lo: 46°FLo: 8°C | Hi: 74°FHi: 23°C Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C Lo: 48°FLo: 9°C | Hi: 76°FHi: 24°C Lo: 48°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 AM MDT Tue Sep 29 2026 
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Meteorlogic Glosserator
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Issued: 506 AM MDT Tue Sep 29 2026
Key Messages
- Seasonable Temperatures Early This Week: High temperatures today and Wednesday will hover near seasonal averages, reaching the upper 60s to lower 70s across lower elevations.
- Unseasonably Warm Early October: Upper-level ridging builds over the Intermountain West starting Thursday, bringing high confidence in dry weather and temperatures 7 to 10 degrees above normal (mid-to-upper 70s, with localized spots touching 80F).
Discussion
... Issued at 214 AM MDT Tue Sep 29 2026
High pressure wi...