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Harlowton Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Mostly Cloudy | Chance of T-Storm | Rain and Snow | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Sunny |
| Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 25°FLo: -4°C | Hi: 45°FHi: 7°C | Lo: 25°FLo: -4°C | Hi: 49°FHi: 9°C | Lo: 25°FLo: -4°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 51°FHi: 11°C | Lo: 29°FLo: -2°C | Hi: 45°FHi: 7°C |
| POP: 90% | POP: 90% | POP: 20% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 351 PM MDT Thu Oct 22 2026 
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Issued: 106 PM MDT Thu Oct 22 2026
Key Messages
- Storm system late Tonight into Saturday morning brings lower elevation rain and mountain/higher foothills snow; greatest precipitation totals expected west of Billings, with little to no precipitation over SE Montana.
- Critical Fire Weather Conditions Friday afternoon/evening from Sheridan County eastward across much of SE Montana.
- Windy conditions (gusts 25-45 mph) expected Friday into Saturday morning.
- Seasonal temperatures (highs in the 50s) and unsettled conditions (20-40% precipi...