Derby, NY Weather Forecast
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Derby Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Showers | Chance of Showers | Partly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers |
| Lo: 43°FLo: 6°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | ||
| POP: 50% | POP: 50% | POP: 40% | POP: 70% | POP: 50% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 AM EDT Mon Sep 14 2026 

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Issued: 240 AM EDT Mon Sep 14 2026
Key Messages
1) Cool and mostly dry weather through early Tuesday morning.
2) Periodic showers and thunderstorms are possible along a stationary front Tuesday night through Thursday night.
Discussion
... KEY MESSAGE 1...Cool and mostly dry weather through early Tuesday morning.
A strong northern stream trough will move across the eastern Great Lakes region today, bringing northwest flow and cold air advection that will result in a cooler day. 850mb temperatures will drop to around +4 deg C by this af...
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