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Portchester Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  | | | | | | | | |
| Clear | Sunny | Partly Cloudy | Partly Sunny | Mostly Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny |
| Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 754 PM EDT Sun Oct 18 2026 
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Issued: 819 PM EDT Sun Oct 18 2026
Key Messages
1) There is potential for frost formation across parts of the interior overnight.
2) A non-tropical low develops east of the Carolinas early this week and slowly tracks north off the Mid Atlantic through mid to late week. Coastal impacts remain possible.
Discussion
... .KEY MESSAGE 1... High pressure moves overhead tonight with light winds and clear skies. This will result in a good radiational cooling conditions. Overnight lows fall into the 30s inland and 40s along the coast. Most of ...