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Town of Old Saybrook, CTOld Saybrook, CT Weather Forecast
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Old Saybrook Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Showers | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C |
| POP: 90% | POP: 90% | POP: 50% | POP: 60% | POP: 80% | POP: 80% | POP: 50% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 735 AM EDT Mon Aug 31 2026 
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Instant definitions for any meteorological term.
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Issued: 733 AM EDT Mon Aug 31 2026
Key Messages
1) Unsettled tonight through Thursday as a frontal boundary remains in close proximity, interacting with impulses in the westerlies.
2) Drier and cooler for the weekend.
Discussion
... .KEY MESSAGE 1... Expect mainly dry conditions today as a weak cold front continues to work south of the area into the northern Mid Atlantic region. However, this will be short-lived as the forecast area will reside at the southern edge of the westerlies through the upcoming week. The aforementioned cold ...