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Riverside School Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Patchy Fog | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Partly Sunny | Partly Cloudy |
| Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 60°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 613 AM EDT Fri Sep 18 2026 
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Issued: 424 AM EDT Fri Sep 18 2026
Key Messages
- Rain chances return for the weekend...but probabilities/ evolution are in question (some areas may not see precipitation at all).
- Seasonably cool Monday through midweek.
Discussion
... Issued at 209 AM EDT Fri Sep 18 2026
Pattern Synopsis / Forecast:
Corridor of quick flow aloft guided by two dominant features spanning the CONUS... longwave trough over the Pacific NW and a stout thermal ridge over the southern CONUS. Result is a ridge axis that noses its northern zenith into the Dakotas,...