St. James, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. James, a community in Suffolk County, New York.
This Afternoon
68°F
Partly Sunny
Partly sunny. High near 68, with temperatures falling to around 63 in the afternoon. South wind around 7 mph.
7-day forecast for St. James
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Partly Sunny | 7 mph S | 0% |
| Tonight | 53°F | Patchy Fog | 6 mph SW | 3% |
| Wednesday | 70°F | Patchy Fog then Sunny | 3 to 10 mph SW | 3% |
| Wednesday Night | 58°F | Partly Cloudy | 5 to 8 mph S | 2% |
| Thursday | 69°F | Slight Chance Rain Showers | 5 to 10 mph S | 19% |
| Thursday Night | 60°F | Rain Showers | 6 to 9 mph SW | 83% |
| Friday | 67°F | Showers And Thunderstorms | 7 mph S | 91% |
| Friday Night | 55°F | Showers And Thunderstorms | 5 mph W | 91% |
| Saturday | 64°F | Rain Showers Likely | 8 mph NW | 59% |
| Saturday Night | 44°F | Slight Chance Rain Showers | 8 mph NW | 20% |
| Sunday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph W | 19% |
| Sunday Night | 41°F | Partly Cloudy | 8 mph W | 14% |
| Monday | 58°F | Chance Light Rain | 9 to 14 mph NW | 25% |
| Monday Night | 41°F | Chance Light Rain | 12 mph W | 25% |
Forecast source: National Weather Service (api.weather.gov) for St. James (40.876, -73.152). Updated through the day.
Growing snapshot for St. James
Last spring frost
Apr 10
First fall frost
Nov 2
Growing season
207 days
Hardiness zone
7b
More local growing data for St. James: nearby ZIP 11767 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 (4.4 mi from St. James). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.