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Arapooash Lake Weather Forecast
| TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  |  |  | | | |  | |  |
| Chance of T-Storm | Chance of Showers | Partly Cloudy | Clouds | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Rain/Snow Showers |
| Lo: 40°FLo: 4°C | Hi: 60°FHi: 16°C | Lo: 30°FLo: -1°C | Hi: 61°FHi: 16°C | Lo: 31°FLo: -1°C | Hi: 69°FHi: 21°C | Lo: 35°FLo: 2°C | Hi: 70°FHi: 21°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C |
| POP: 80% | POP: 50% | POP: 30% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 350 PM MDT Sun Sep 06 2026 
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Issued: 730 PM MDT Sun Sep 6 2026
Key Messages
- A weather system will bring isolated to scattered showers and thunderstorms tonight into Monday.
- Thunderstorms tonight into Monday will be capable of producing localized heavy rain, gusty winds, and hail.
- Windy conditions are expected Monday into Tuesday (wind gusts of 25 to 50 mph, strongest in south-central MT Monday and eastern MT Tuesday). This will cause elevated fire weather conditions.
- After a mostly dry mid-week, a weather system looks to bring cooler temperatures and the cha...