Union, KY Weather & Growing Conditions
Today
67°F
Rain
Rain and a slight chance of thunderstorms. Cloudy, with a high near 67. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 67°F | Rain | 9 to 14 mph S | 94% |
| Tonight | 50°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 8 mph SW | 16% |
| Thursday | 65°F | Mostly Sunny | 5 to 9 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 2 to 6 mph SW | 0% |
| Friday | 60°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph W | 19% |
| Friday Night | 40°F | Slight Chance Light Rain then Mostly Cloudy | 7 mph NW | 19% |
| Saturday | 55°F | Mostly Sunny | 7 mph NW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph NW | 0% |
| Sunday | 58°F | Sunny | 2 to 7 mph W | 1% |
| Sunday Night | 35°F | Mostly Clear | 6 mph W | 2% |
| Monday | 61°F | Sunny | 2 to 6 mph SW | 2% |
| Monday Night | 38°F | Mostly Clear | 6 mph SW | 1% |
| Tuesday | 65°F | Sunny | 7 mph SW | 1% |
| Tuesday Night | 39°F | Mostly Clear | 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Union, KY
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
6b
Explore more for Union, KY: full frost dates · planting calendar · Kentucky frost dates
Climate data from the nearest NOAA station, Cincinnati Northern Ky Ap, Ky (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.