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Split Reservoir Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Hi: 70°FHi: 21°C Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C Lo: 50°FLo: 10°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C Lo: 45°FLo: 7°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 511 AM MDT Sun Sep 27 2026 
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Issued: 1126 AM MDT Sun Sep 27 2026
Key Messages
- Gusty winds will slowly reduce through the day today.
- Highs will remain the 60s and 70s through the end of the coming work week.
- Possible rain showers in the southeast portions of the CWA Monday morning. Isolated Thunderstorms may be possible SE of the Yellowstone River.
Discussion
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Synoptic Setup: Forecast begins with a ridge running from northern Manitoba into Ontario and down the Mississippi Valley. It then turns back west across the southern plains and into the Hot High pressure ...