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Grass River Flow, NY Weather Forecast
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Grass River Flow Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY |
 |  |  |  | | |  |  | | |  |  |
| Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Sunny | Mostly Clear | Mostly Clear | Clear | Partly Sunny | Chance of Showers | Partly Cloudy |
| Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Hi: 70°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C Lo: 49°FLo: 9°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C |
| POP: 70% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 625 PM EDT Wed Sep 02 2026 
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Issued: 729 PM EDT Wed Sep 2 2026
Key Messages
As of 308 PM EDT Wednesday...
1. Gusty south winds continue today. Widespread rainfall will move in this evening and overnight, with periods of moderate to locally heavy rain expected along with some embedded thunderstorms.
2. Some scattered afternoon showers are possible each day Thursday through Saturday.
3. No significant weather Sunday through Wednesday. Moderating temperatures and dry weather expected early next week, then likely trending cooler with a low chance for showers.