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| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Chance of Showers | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Showers | Partly Cloudy | Clear | Mostly Sunny | Clear | Mostly Sunny | Clear | Mostly Sunny |
| Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C |
| POP: 50% | POP: 20% | POP: 70% | POP: 80% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 502 PM EDT Mon Sep 21 2026 
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Issued: 159 PM EDT Mon Sep 21 2026
Key Messages
1) Rain chances continue much of this week. Longer duration rainfall totals could be high and lead to localized flooding and/or river rises into Wednesday morning.
2) Below-normal temperatures linger through much of the week.
Discussion
... KEY MESSAGE 1... Generally light rain continues near/north of Pittsburgh this afternoon in a general overrunning pattern. A bit heavier activity is focused south of I-70 where precipitable water values remain a bit more elevated, in the 1.6 to 1.8 in...