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| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 45°FLo: 7°C | Hi: 62°FHi: 17°C | Lo: 43°FLo: 6°C | Hi: 68°FHi: 20°C | Lo: 46°FLo: 8°C | Hi: 73°FHi: 23°C | Hi: 74°FHi: 23°C Lo: 50°FLo: 10°C | Hi: 74°FHi: 23°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 77°FHi: 25°C Lo: 51°FLo: 11°C | Hi: 77°FHi: 25°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Fri Sep 18 2026 
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Issued: 601 PM MDT Fri Sep 18 2026
Key Messages
- Light to Moderate rainfall is possible across most of central and eastern Idaho is expected through tonight, and to a lesser extent Saturday
- Mostly dry conditions expected through next week, with a few showers and storms possible
Discussion
... Issued at 1116 AM MDT Fri Sep 18 2026
The strong upper low to our west continues to slowly shift east and will moves across the state tonight and tomorrow. The airmass contains a lot of moisture, even a bit more than yesterday. That means heavy r...