St. Mary, KY Weather & Growing Conditions
This Afternoon
80°F
Sunny
Sunny, with a high near 80. South wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 9 mph S | 2% |
| Tonight | 63°F | Showers And Thunderstorms | 7 to 12 mph S | 94% |
| Wednesday | 71°F | Showers And Thunderstorms | 7 to 13 mph S | 98% |
| Wednesday Night | 49°F | Mostly Cloudy | 1 to 6 mph SW | 5% |
| Thursday | 70°F | Mostly Sunny | 2 to 7 mph SW | 0% |
| Thursday Night | 43°F | Partly Cloudy | 2 mph W | 0% |
| Friday | 67°F | Mostly Sunny | 0 to 7 mph NW | 5% |
| Friday Night | 40°F | Mostly Cloudy | 5 mph N | 8% |
| Saturday | 58°F | Mostly Sunny | 5 mph N | 2% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph N | 1% |
| Sunday | 60°F | Mostly Sunny | 0 to 5 mph W | 6% |
| Sunday Night | 32°F | Mostly Clear then Slight Chance Rain Showers | 3 mph W | 15% |
| Monday | 63°F | Slight Chance Rain Showers then Sunny | 1 to 6 mph W | 15% |
| Monday Night | 34°F | Mostly Clear | 1 to 5 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Mary, KY
Last spring frost
Apr 22
First fall frost
Oct 20
Growing season
180 days
Hardiness zone
7a
Explore more for St. Mary, KY: full frost dates · planting calendar · Kentucky frost dates
Climate data from the nearest NOAA station, Bradfordsville, Ky (11.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.