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Upper Blue Reservoir Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  | |  | | |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Partly Cloudy | Thunderstorms | Chance of T-Storm | Thunderstorms | Chance of T-Storm | Thunderstorms |
| Lo: 47°FLo: 8°C | Hi: 69°FHi: 21°C | Lo: 48°FLo: 9°C | Hi: 72°FHi: 22°C | Lo: 48°FLo: 9°C | Hi: 72°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 48°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 47°FLo: 8°C | Hi: 68°FHi: 20°C |
| POP: 30% | POP: 30% | POP: 40% | POP: 10% | POP: 40% | POP: 50% | POP: 70% | POP: 50% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 605 PM MDT Tue Aug 18 2026 
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Issued: 547 PM MDT Tue Aug 18 2026
Key Messages
- Scattered showers and thunderstorms this afternoon into tonight. A couple strong to severe storms possible across the eastern plains later this evening.
- Isolated storms again for Wednesday, though chances of stronger storms shift to the south.
- Warming and drying trend to end the week, before monsoon moisture attempts to return Sunday into early next week.
Discussion
/Through Tuesday/... Issued at 1229 PM MDT Tue Aug 18 2026
A somewhat uncertain forecast for...