Port Henry, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Henry, a community in Essex County, New York.
Overnight
44°F
Mostly Clear
Mostly clear, with a low around 44. North wind around 10 mph.
7-day forecast for Port Henry
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Mostly Clear | 10 mph N | 0% |
| Saturday | 63°F | Sunny | 2 to 9 mph N | 0% |
| Saturday Night | 47°F | Partly Cloudy | 0 to 6 mph SW | 1% |
| Sunday | 57°F | Rain Showers | 5 to 10 mph S | 93% |
| Sunday Night | 47°F | Chance Rain Showers then Mostly Cloudy | 3 to 13 mph N | 31% |
| Monday | 59°F | Partly Sunny | 14 mph N | 0% |
| Monday Night | 44°F | Mostly Cloudy | 6 to 10 mph N | 0% |
| Tuesday | 60°F | Partly Sunny | 8 mph N | 0% |
| Tuesday Night | 45°F | Partly Cloudy | 2 to 8 mph N | 0% |
| Wednesday | 65°F | Mostly Sunny | 3 mph NE | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 3 mph S | 4% |
| Thursday | 63°F | Slight Chance Rain Showers | 0 to 5 mph N | 21% |
| Thursday Night | 48°F | Chance Rain Showers | 6 mph N | 26% |
| Friday | 64°F | Chance Rain Showers | 6 to 10 mph N | 26% |
Forecast source: National Weather Service (api.weather.gov) for Port Henry (44.045, -73.461). Updated through the day.
Growing snapshot for Port Henry
Last spring frost
Apr 30
First fall frost
Oct 17
Growing season
168 days
Hardiness zone
5a
More local growing data for Port Henry: nearby ZIP 12974 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Elizabethtown
Lake Placid
Mineville
Schroon Lake
Westport
Willsboro
Willsboro Point
Wilmington
Witherbee
Climate data from the nearest NOAA station, Vergennes, Vt (13.3 mi from Port Henry). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.