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Lake Elva Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  | |  | | | |  | |
| Smoke | Sunny | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Sunny | Chance of Showers | Chance of T-Storm | Partly Cloudy | Chance of T-Storm |
| Lo: 58°FLo: 14°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 53°FLo: 12°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 54°FLo: 12°C | Hi: 74°FHi: 23°C Lo: 54°FLo: 12°C |
| POP: 20% | POP: 20% | POP: 30% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Thu Aug 20 2026 
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Lake Elva Forecast Discussion
Issued: 549 PM MDT Thu Aug 20 2026
Key Messages
- It will be hot and dry through Friday, with the warmer temperatures extending through Sunday.
- There is a chance for thunderstorms in Southwest MT Friday, with chances for showers and thunderstorms in Southwest and Central MT Saturday and Sunday.
- A cold front will bring gusty winds across the CWA Sunday, and will cause below seasonal average temperatures on Monday.
Discussion
...- Meteorological Overview:
Montana continues to be under the influence of an uppe...