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Town of Brookhaven, NYStony Brook, NY Weather Forecast
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Stony Brook Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  |  | | |  | | | |
| Showers | Rain | Chance of Rain | Partly Sunny | Clearing | Mostly Sunny | Clearing | Sunny | Mostly Clear | Sunny | Clear | Sunny |
| Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C | Lo: 35°FLo: 2°C | Hi: 49°FHi: 9°C | Lo: 35°FLo: 2°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C |
| POP: 100% | POP: 100% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 409 PM EST Thu Nov 12 2026 
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Issued: 346 PM EST Thu Nov 12 2026
Key Messages
1) Low pressure will impact the region as it passes off the southern New Jersey coast late today and passes slowly south and east of Long Island tonight into Friday. Locally heavy downpours into this evening could lead to brief nuisance flooding. The rain may mix with or change to snow mainly in the higher elevations late tonight into Friday, with little to no accumulation expected.
2) Minor coastal flooding is possible in vulnerable locations along the Long Island south shore during ...