Harman US

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

WhenTempForecastWindPrecip
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.