Syosset, NY Weather & Growing Conditions
Today
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 66 in the afternoon. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 5 to 10 mph SW | 0% |
| Tonight | 58°F | Partly Cloudy | 5 to 8 mph S | 0% |
| Thursday | 71°F | Mostly Cloudy | 8 to 12 mph S | 7% |
| Thursday Night | 60°F | Showers And Thunderstorms Likely | 6 to 10 mph S | 72% |
| Friday | 68°F | Showers And Thunderstorms | 6 mph S | 93% |
| Friday Night | 54°F | Showers And Thunderstorms | 6 mph W | 77% |
| Saturday | 64°F | Mostly Sunny | 6 to 9 mph NW | 14% |
| Saturday Night | 45°F | Slight Chance Light Rain | 10 mph W | 23% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 10 mph W | 15% |
| Sunday Night | 42°F | Partly Cloudy | 10 mph W | 5% |
| Monday | 58°F | Sunny | 10 to 15 mph W | 12% |
| Monday Night | 41°F | Mostly Clear | 8 to 12 mph W | 12% |
| Tuesday | 60°F | Sunny | 13 mph SW | 4% |
| Tuesday Night | 42°F | Mostly Clear | 12 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Syosset, NY
Last spring frost
Apr 9
First fall frost
Nov 10
Growing season
215 days
Hardiness zone
7b
Explore more for Syosset, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Centerport, Ny (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.