Alexandria Bay, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alexandria Bay, a village in Jefferson County, New York.
Today
73°F
Mostly Sunny
Mostly sunny, with a high near 73. Southwest wind 6 to 9 mph.
7-day forecast for Alexandria Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 6 to 9 mph SW | 0% |
| Tonight | 59°F | Mostly Cloudy then Rain Showers Likely | 7 to 13 mph S | 74% |
| Thursday | 66°F | Rain Showers | 12 mph SW | 95% |
| Thursday Night | 50°F | Mostly Cloudy | 7 mph SW | 2% |
| Friday | 60°F | Slight Chance Rain Showers | 5 mph W | 18% |
| Friday Night | 45°F | Chance Rain Showers | 3 to 8 mph NE | 33% |
| Saturday | 52°F | Chance Rain Showers | 8 mph NE | 44% |
| Saturday Night | 35°F | Chance Rain Showers | 2 to 7 mph N | 44% |
| Sunday | 51°F | Chance Rain Showers | 3 to 9 mph W | 28% |
| Sunday Night | 34°F | Slight Chance Rain Showers | 6 mph W | 24% |
| Monday | 51°F | Slight Chance Rain Showers | 3 to 9 mph W | 24% |
| Monday Night | 34°F | Slight Chance Rain Showers | 5 mph SW | 18% |
| Tuesday | 53°F | Chance Rain Showers | 5 to 12 mph SW | 37% |
| Tuesday Night | 31°F | Chance Rain Showers then Mostly Cloudy | 2 to 7 mph W | 37% |
Forecast source: National Weather Service (api.weather.gov) for Alexandria Bay (44.337, -75.923). Updated through the day.
Growing snapshot for Alexandria Bay
Last spring frost
May 14
First fall frost
Sep 26
Growing season
134 days
Hardiness zone
5a
More local growing data for Alexandria Bay: nearby ZIP 13607 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Gouverneur 3 Nw, Ny (19.7 mi from Alexandria Bay). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.