Black River, NY Weather & Growing Conditions
This Afternoon
76°F
Mostly Sunny
Mostly sunny. High near 76, with temperatures falling to around 69 in the afternoon. South wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 8 mph S | 2% |
| Tonight | 58°F | Mostly Cloudy then Rain Showers | 10 to 17 mph S | 68% |
| Thursday | 66°F | Rain Showers | 9 to 16 mph SW | 87% |
| Thursday Night | 48°F | Mostly Cloudy | 6 to 9 mph SW | 6% |
| Friday | 60°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph SW | 24% |
| Friday Night | 43°F | Chance Rain Showers | 1 to 5 mph N | 51% |
| Saturday | 53°F | Rain Showers Likely | 6 to 9 mph N | 73% |
| Saturday Night | 36°F | Rain Showers Likely | 7 mph NW | 65% |
| Sunday | 50°F | Chance Rain Showers | 7 to 13 mph W | 38% |
| Sunday Night | 36°F | Chance Rain Showers | 10 mph W | 46% |
| Monday | 49°F | Chance Rain Showers | 8 to 13 mph W | 45% |
| Monday Night | 35°F | Partly Cloudy | 7 to 10 mph W | 12% |
| Tuesday | 52°F | Slight Chance Rain Showers | 12 to 15 mph SW | 16% |
| Tuesday Night | 33°F | Slight Chance Rain Showers | 6 to 10 mph W | 16% |
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 Nov 4, 2026.