Port Byron, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Byron, a village in Cayuga County, New York.
Tonight
56°F
Mostly Cloudy
Mostly cloudy, with a low around 56. South wind 6 to 9 mph.
7-day forecast for Port Byron
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Cloudy | 6 to 9 mph S | 0% |
| Wednesday | 76°F | Mostly Sunny | 7 to 12 mph S | 0% |
| Wednesday Night | 61°F | Rain Showers | 13 mph S | 94% |
| Thursday | 72°F | Rain Showers | 3 to 12 mph SW | 94% |
| Thursday Night | 49°F | Chance Rain Showers | 2 mph SW | 21% |
| Friday | 65°F | Slight Chance Rain Showers | 3 mph W | 17% |
| Friday Night | 45°F | Chance Rain Showers | 2 mph NW | 32% |
| Saturday | 56°F | Chance Rain Showers | 1 to 7 mph NW | 44% |
| Saturday Night | 39°F | Chance Rain Showers | 5 mph W | 44% |
| Sunday | 55°F | Slight Chance Rain Showers then Slight Chance Light Rain | 3 to 8 mph W | 16% |
| Sunday Night | 36°F | Slight Chance Light Rain then Slight Chance Rain Showers | 5 mph W | 30% |
| Monday | 54°F | Chance Light Rain | 6 to 10 mph W | 35% |
| Monday Night | 37°F | Chance Light Rain then Chance Rain Showers | 6 mph SW | 35% |
| Tuesday | 56°F | Slight Chance Light Rain | 7 to 12 mph SW | 24% |
Forecast source: National Weather Service (api.weather.gov) for Port Byron (43.037, -76.625). Updated through the day.
Growing snapshot for Port Byron
Last spring frost
May 2
First fall frost
Oct 18
Growing season
166 days
Hardiness zone
6a
More local growing data for Port Byron: nearby ZIP 13140 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Auburn, Ny (10.3 mi from Port Byron). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.