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Castner Park Weather Forecast
| REST OF TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
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| Windy | Chance of Rain | Chance of T-Storm | Mostly Cloudy | Chance of Rain | Chance of Rain | Chance of T-Storm | Showers Likely | Chance of Showers | Partly Cloudy | Sunny | Partly Cloudy |
| Hi: 81°FHi: 27°C | Lo: 49°FLo: 9°C | Hi: 55°FHi: 13°C | Lo: 41°FLo: 5°C | Hi: 55°FHi: 13°C | Lo: 41°FLo: 5°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C |
| POP: 50% | POP: 70% | POP: 20% | POP: 70% | POP: 70% | POP: 70% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1002 AM MDT Thu Sep 10 2026 
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Issued: 601 AM MDT Thu Sep 10 2026
Key Messages
- Warm, dry and breezy today.
- Next weather system arrives Friday, bringing cooler temperatures along with some periods of rain/mountain snowfall.
- Another weather system brings even cooler temperatures and more widespread precipitation to Montana, with more chances for mountain snowfall.
Discussion
... /Issued 215 AM MDT Thu Sep 10 2026/- Meteorological Overview:
In the wake of a series of upper level systems earlier this week, a weak ridge embedded in northwesterly flow will continue to br...