Jefferson, NY Weather & Growing Conditions
Today
77°F
Sunny
Sunny, with a high near 77. West wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 5 mph W | 0% |
| Tonight | 57°F | Partly Cloudy | 3 mph S | 0% |
| Wednesday | 79°F | Partly Sunny | 5 mph SW | 0% |
| Wednesday Night | 64°F | Mostly Cloudy then Chance Rain Showers | 3 mph S | 28% |
| Thursday | 81°F | Showers And Thunderstorms | 6 mph SW | 81% |
| Thursday Night | 65°F | Showers And Thunderstorms then Scattered Showers And Thunderstorms | 5 mph SW | 81% |
| Friday | 80°F | Showers And Thunderstorms | 6 mph W | 78% |
| Friday Night | 63°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph SW | 78% |
| Saturday | 78°F | Showers And Thunderstorms Likely | 2 to 6 mph W | 67% |
| Saturday Night | 62°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph W | 67% |
| Sunday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph W | 15% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms | 6 mph SW | 19% |
| Monday | 79°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 to 9 mph W | 42% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 7 mph W | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jefferson, NY
Last spring frost
May 18
First fall frost
Oct 2
Growing season
137 days
Hardiness zone
5b
Explore more for Jefferson, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Lansing Manor, Ny (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.