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Cornwall Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  | | | | | | | | | |
| Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny |
| Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 31°FLo: -1°C | Hi: 60°FHi: 16°C | Lo: 31°FLo: -1°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 756 PM EDT Wed Oct 21 2026 
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Meteorlogic Glosserator
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Instant definitions for any meteorological term.
Issued: 924 PM EDT Wed Oct 21 2026
Key Messages
1) Mainly dry conditions will continue into early next week with gradually decreasing N-NE winds through the end of this week.
2) This evenings high tide cycle has past. Subsequent tide cycles look marginal at best to reach minor benchmarks.
Discussion
... .KEY MESSAGE 1... Deepening low pressure over the western Atlantic, along the 70th meridian and south of the 40th parallel, will track slowly north tonight and then take a more eastward turn on Thursday. Guidance remains in very good ...