St. Charles, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Charles, a city in Hopkins County, Kentucky.
Today
85°F
Sunny
Sunny. High near 85, with temperatures falling to around 83 in the afternoon. Northeast wind around 5 mph.
7-day forecast for St. Charles
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 5 mph NE | 0% |
| Tonight | 66°F | Mostly Clear | 2 mph NNE | 0% |
| Wednesday | 88°F | Sunny | 2 mph NW | 0% |
| Wednesday Night | 69°F | Mostly Clear | 2 mph S | 0% |
| Thursday | 90°F | Mostly Sunny | 5 mph SW | 5% |
| Thursday Night | 72°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph S | 20% |
| Friday | 89°F | Chance Showers And Thunderstorms | 5 mph SW | 36% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 2 mph SSW | 36% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 3 mph SW | 39% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SSW | 39% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms | 3 mph SSW | 20% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph SSW | 19% |
| Monday | 90°F | Sunny | 5 mph SW | 6% |
| Monday Night | 73°F | Partly Cloudy | 3 mph SSW | 6% |
Forecast source: National Weather Service (api.weather.gov) for St. Charles (37.191, -87.550). Updated through the day.
Growing snapshot for St. Charles
Last spring frost
Apr 2
First fall frost
Nov 1
Growing season
212 days
Hardiness zone
7a
More local growing data for St. Charles: nearby ZIP 42453 weather · frost dates · planting calendar · Kentucky frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Madisonville, Ky (13.6 mi from St. Charles). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.