Lake Grove, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Grove, a village in Suffolk County, New York.
Tonight
53°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 53. Southwest wind around 5 mph.
7-day forecast for Lake Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Patchy Fog | 5 mph SW | 3% |
| Wednesday | 71°F | Patchy Fog then Sunny | 3 to 10 mph SW | 3% |
| Wednesday Night | 58°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 69°F | Slight Chance Rain Showers | 5 to 12 mph S | 17% |
| Thursday Night | 60°F | Rain Showers | 6 to 9 mph SW | 84% |
| Friday | 67°F | Showers And Thunderstorms | 7 mph S | 92% |
| Friday Night | 55°F | Showers And Thunderstorms | 5 mph W | 92% |
| Saturday | 64°F | Rain Showers Likely | 8 mph NW | 60% |
| Saturday Night | 43°F | Slight Chance Rain Showers | 7 mph NW | 20% |
| Sunday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph NW | 18% |
| Sunday Night | 40°F | Partly Cloudy | 5 to 8 mph W | 14% |
| Monday | 58°F | Chance Light Rain | 9 to 14 mph NW | 25% |
| Monday Night | 40°F | Chance Light Rain | 10 mph W | 25% |
| Tuesday | 59°F | Slight Chance Light Rain then Mostly Sunny | 12 to 15 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov) for Lake Grove (40.858, -73.117). Updated through the day.
Growing snapshot for Lake Grove
Last spring frost
Apr 10
First fall frost
Nov 2
Growing season
207 days
Hardiness zone
7b
More local growing data for Lake Grove: nearby ZIP 11755 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Islip Li Macarthur Ap, Ny (4.5 mi from Lake Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.