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Firestone Lake Weather Forecast
| REST OF TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Mostly Cloudy | Chance of T-Storm |
| Hi: 83°FHi: 28°C | Lo: 53°FLo: 12°C | Hi: 77°FHi: 25°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Lo: 47°FLo: 8°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 77°FHi: 25°C | Lo: 54°FLo: 12°C | Hi: 79°FHi: 26°C | Lo: 53°FLo: 12°C |
| POP: 30% | POP: 50% | POP: 50% | POP: 50% | POP: 30% | POP: 20% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1249 PM MDT Fri Sep 18 2026 
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Issued: 210 PM MDT Fri Sep 18 2026
Key Messages
- Increasing coverage and intensity of afternoon/evening showers and t-storms for the lower elevations, peaking Saturday when locally heavy rainfall can be expected across the plains.
- Warm temperatures through Saturday to give way to more seasonal conditions Sunday onwards.
- Trending drier next week, although at least isolated to scattered showers will remain each day.
Discussion
/Through Friday/... Issued at 210 PM MDT Fri Sep 18 2026
The day started off mostly cloudy, which slightly slow...