Black Rock State Park, CT Weather Forecast
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Black Rock State Park Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
| Partly Cloudy | Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Chance of Showers | Showers | Chance of T-Storm | Chance of T-Storm | Mostly Clear |
| Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C |
| POP: 30% | POP: 30% | POP: 40% | POP: 60% | POP: 60% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 830 PM EDT Tue Aug 18 2026 

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Black Rock State Park Forecast Discussion
Issued: 107 AM EDT Wed Aug 19 2026
Key Messages
1) Isolated to scattered showers, with isolated thunderstorms, are expected Wednesday afternoon into Thursday, as a cold front slowly moves southward across the region.
2) Unsettled weather returns over the weekend, as a broad upper level trough impacts the region, although there is low confidence in the timing, rainfall amounts and details with this system.
Discussion
... KEY MESSAGE 1...
High pressure builds in briefly tonight into early Wednesday with pat...
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