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Arch Slough Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | | | |  |  | | | |
| Mostly Clear | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Partly Cloudy | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Partly Cloudy | Chance of T-Storm |
| Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C |
| POP: 20% | POP: 10% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 AM MDT Sun Aug 16 2026 
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Arch Slough Forecast Discussion
Issued: 1210 AM MDT Sun Aug 16 2026
Key Messages
- Generally dry conditions with near-normal temperatures are expected through Monday, although an isolated mountain shower or two is possible.
- A frontal boundary could deliver some additional showers Tuesday and Wednesday next week.
- A warming trend will continue through the week. Triple digits will remain confined to the Four Corners and low desert valleys.
Discussion
... Issued at 940 PM MDT Sat Aug 15 2026
Ridging builds in over the Intermountain West Sunda...