Waterloo School, WA Weather Forecast
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Waterloo School Weather Forecast
| REST OF TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | THURSDAY | FRIDAY |
| Mostly Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Showers |
| Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C | Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C | Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C Lo: 46°FLo: 8°C | Hi: 67°FHi: 19°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1045 PM PDT Fri Sep 18 2026 

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Issued: 1047 PM PDT Fri Sep 18 2026
Key Messages
- Warm temperatures through Wednesday with afternoon highs in the mid 70s to low 80s.
- Changes arrive late week with temperatures cooling slowly and increasing. Small chances for light showers late week into the weekend.
Discussion
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Saturday-Sunday: The Inland NW will experience a mild and dry weekend as a weak upper-level ridge passes through the region. Temperatures on Saturday will not deviate much from Friday with afternoon highs in the 70s to around 80F. Highs will warm a few more ...
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