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Town of Smithtown, New YorkCommack, NY Weather Forecast
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| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Mostly Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear |
| Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 224 PM EDT Sat Oct 24 2026 
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Issued: 325 AM EDT Sun Oct 25 2026
Key Messages
1) Frost Advisory in effect this morning for coastal CT and far eastern LI.
2) High pressure largely in control through the upcoming week.
Discussion
... .KEY MESSAGE 1... Very favorable conditions exist this morning for radiational cooling and as a result, more typical spots have cooled significantly, some spots into the upper 20s. While the growing season has ended across the interior, it has yet to do so at the coast (Nov 1 or 11). Thus, a frost advisory in in effect for these areas ...