Weather WorldValley Stream State Park, NY Weather Forecast
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Valley Stream State Park Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | | | | | |  |  |  | |  |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Chance of Showers | Chance of T-Storm | Showers Likely | Chance of Showers |
| Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 70°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C |
| POP: 40% | POP: 60% | POP: 60% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 PM EDT Sun Aug 23 2026 
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Valley Stream State Park Forecast Discussion
Issued: 131 AM EDT Mon Aug 24 2026
Key Messages
1) Chance of showers for both Monday and Tuesday afternoons. Isolated thunderstorm possible for Monday. Severe weather impacts are not expected.
2) More chances of showers and thunderstorms for Thursday and Friday. Low confidence in potential impacts at this time.
Discussion
... .KEY MESSAGE 1... Cold pool aloft with longwave troughing will be over the region for both Monday and Tuesday. Both afternoons could see instability showers for parts of the Lower Hudson Valley and Southern Conn...