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Costilla Reservoir Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY 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 | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy |
| Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Lo: 50°FLo: 10°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 40% | POP: 50% | POP: 50% | POP: 80% | POP: 50% | POP: 50% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Sun Aug 23 2026 
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Issued: 1154 AM MDT Sun Aug 23 2026
Key Messages
Updated at 1139 AM MDT Sun Aug 23 2026- Showers and thunderstorms will decrease in coverage today and Monday, then increase in coverage Tuesday through Thursday, with a risk of cloud-to-ground lightning, erratic wind gusts, and ponding of water on roads.
- A risk of locally heavy rainfall and flash flooding will develop with storms along and east of the Sangre de Cristo Mountains both Tuesday and Wednesday.
- Moderate-to-high heat risk will impact much of central and eastern New Mexico du...