Old Lake, MT Weather Forecast
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Old Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Mostly Sunny | Partly Cloudy | Mostly Cloudy | Rain | Rain | Rain | Rain | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain |
| Hi: 85°FHi: 29°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 31°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 45°FHi: 7°C | Hi: 55°FHi: 13°C Lo: 31°FLo: -1°C | Hi: 55°FHi: 13°C Lo: 31°FLo: -1°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Hi: 55°FHi: 13°C Lo: 35°FLo: 2°C |
| POP: 80% | POP: 100% |
POP = Probability of Precipitation.
Weather Outlook Updated: 521 AM MDT Fri Oct 09 2026 

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Issued: 1223 AM MDT Fri Oct 9 2026
Key Messages
- Warm, dry, conditions continue elevate fire weather concerns today, particularly for Fire Zone 137.
- Potential record high temperatures may be seen across the CWA today.
- Markedly cooler temps will follow this weekend with increasing chances for rain and snow. Trace snow possible for most areas.
Discussion
...
Weak ridging conditions aloft will persist through Saturday. A warm front is expected to lift through the CWA by this morning, advecting above average temperatures and limited downs...
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