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| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers | Showers | Showers | Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C |
| POP: 50% | POP: 90% | POP: 70% | POP: 70% | POP: 90% | POP: 90% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 743 PM EDT Sun Sep 20 2026 
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Issued: 751 PM EDT Sun Sep 20 2026
Key Messages
1) Rain chances continue into the midweek period. 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... There has been little change to the thinking regarding the large-scale pattern. An approaching mid-level ridge is progged to flatten as it crosses the Great Lakes tonight and tomorrow morning. Meanwhile an Upper Plains shortwave trough will meander eastward with t...