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Clarington Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Showers | Chance of T-Storm | Chance of T-Storm | Showers | Showers Likely | Partly Cloudy | Partly Cloudy |
| Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C |
| POP: 70% | POP: 70% | POP: 50% | POP: 50% | POP: 70% | POP: 70% | POP: 80% | POP: 80% | POP: 70% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 803 PM EDT Sat Sep 19 2026 
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Issued: 824 PM EDT Sat Sep 19 2026
Key Messages
1) Rain chances return Sunday and continue into early next week. Longer duration rainfall totals could be high and lead to localized flooding and/or river rises
2) Much cooler temperatures arrive by mid-week
Discussion
... KEY MESSAGE 1... A more active pattern is on the horizon beginning later Saturday evening and continuing through next week. A breakdown of the southeastern CONUS ridging will open the door for rounds of waves embedded within quasi-zonal flow and associated rain.
Round ...