Portsmouth, KY Weather & Growing Conditions
Today
88°F
Mostly Sunny
Mostly sunny, with a high near 88. Southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny | 2 mph SE | 14% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 3 mph S | 51% |
| Sunday | 89°F | Partly Sunny | 6 mph SW | 12% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 6 mph N | 45% |
| Monday | 76°F | Chance Rain Showers | 6 mph NE | 44% |
| Monday Night | 56°F | Showers And Thunderstorms Likely | 6 mph NE | 60% |
| Tuesday | 73°F | Showers And Thunderstorms Likely | 6 mph NE | 56% |
| Tuesday Night | 57°F | Showers And Thunderstorms Likely | 6 mph NE | 65% |
| Wednesday | 72°F | Showers And Thunderstorms Likely | 6 mph E | 65% |
| Wednesday Night | 55°F | Showers And Thunderstorms Likely | 6 mph E | 64% |
| Thursday | 72°F | Chance Rain Showers | 6 mph NE | 36% |
| Thursday Night | 53°F | Mostly Cloudy | 5 mph N | 14% |
| Friday | 72°F | Mostly Sunny | 2 to 6 mph NE | 10% |
| Friday Night | 51°F | Partly Cloudy | 2 to 6 mph NE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portsmouth, KY
Last spring frost
Apr 17
First fall frost
Oct 25
Growing season
191 days
Hardiness zone
7a
Explore more for Portsmouth, KY: full frost dates · planting calendar · Kentucky frost dates
Climate data from the nearest NOAA station, Portsmouth-Sciotoville, Oh (7.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.