Princeton, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Princeton, a city in Caldwell County, Kentucky.
Today
86°F
Sunny
Sunny. High near 86, with temperatures falling to around 84 in the afternoon. North northeast wind around 5 mph.
7-day forecast for Princeton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 5 mph NNE | 0% |
| Tonight | 66°F | Mostly Clear | 3 mph NNE | 0% |
| Wednesday | 88°F | Sunny | 2 mph NW | 0% |
| Wednesday Night | 69°F | Mostly Clear | 2 mph SSE | 0% |
| Thursday | 90°F | Mostly Sunny | 5 mph SSW | 4% |
| Thursday Night | 71°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph S | 22% |
| Friday | 88°F | Chance Showers And Thunderstorms | 6 mph SW | 38% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 mph SSW | 38% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 5 mph SW | 36% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SSW | 36% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 17% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph SSW | 16% |
| Monday | 90°F | Sunny | 6 mph SW | 6% |
| Monday Night | 73°F | Partly Cloudy | 3 mph SSW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Princeton (37.106, -87.885). Updated through the day.
Growing snapshot for Princeton
Last spring frost
Apr 11
First fall frost
Oct 24
Growing season
196 days
Hardiness zone
7a
More local growing data for Princeton: nearby ZIP 42445 weather · frost dates · planting calendar · Kentucky frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Princeton 1 Se, Ky (0.6 mi from Princeton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.