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Westside Reservoir Park Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT |
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| Chance of T-Storm | Partly Cloudy | Partly Cloudy | Chance of Rain | Chance of T-Storm | Chance of Rain | Chance of T-Storm | Chance of Rain | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Rain |
| Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 66°FHi: 19°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 36°FLo: 2°C | Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 36°FLo: 2°C |
| POP: 70% | POP: 60% | POP: 60% | POP: 60% | POP: 40% | POP: 20% | POP: 40% | POP: 50% | POP: 70% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 AM MDT Wed Sep 02 2026 
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Issued: 107 AM MDT Wed Sep 2 2026
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KEY MESSAGES:- Widespread showers and thunderstorms today with outflow gusts of 25-45 mph and heavy rain rates up to 0.5 inch per hour.
- Persistent active pattern late week into the weekend under southwesterly flow.
A well-defined upper-level disturbance over northern California early this morning and its associated cold front will move across the Northern Rockies today. Showers and thunderstorms will initiate over north-central Idaho around sunrise, then track northeastward across the...