Black River, NY Weather & Growing Conditions
Today
64°F
Mostly Sunny
Mostly sunny, with a high near 64. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Mostly Sunny | 5 mph NE | 0% |
| Tonight | 46°F | Mostly Cloudy then Chance Rain Showers | 2 to 8 mph E | 31% |
| Sunday | 56°F | Rain Showers | 6 to 9 mph E | 87% |
| Sunday Night | 42°F | Mostly Cloudy | 5 to 9 mph NE | 0% |
| Monday | 57°F | Partly Sunny | 10 mph NE | 0% |
| Monday Night | 40°F | Mostly Cloudy | 6 to 10 mph NE | 0% |
| Tuesday | 62°F | Mostly Sunny | 7 to 10 mph NE | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Wednesday | 65°F | Mostly Sunny | 7 mph E | 2% |
| Wednesday Night | 43°F | Mostly Cloudy | 6 mph E | 7% |
| Thursday | 63°F | Partly Sunny | 8 mph E | 12% |
| Thursday Night | 44°F | Slight Chance Rain Showers | 5 to 8 mph NE | 17% |
| Friday | 64°F | Slight Chance Rain Showers | 5 to 10 mph NE | 17% |
| Friday Night | 44°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph NE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Black River, NY
Last spring frost
May 2
First fall frost
Oct 13
Growing season
163 days
Hardiness zone
4b
Explore more for Black River, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Watertown, Ny (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.