Harman US

Portsmouth, KY Weather & Growing Conditions

This Afternoon
88°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. South wind around 2 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 88°F Slight Chance Showers And Thunderstorms 2 mph S 24%
Tonight 67°F Chance Showers And Thunderstorms then Partly Cloudy 3 mph S 51%
Sunday 90°F Slight Chance Showers And Thunderstorms 5 mph SW 22%
Sunday Night 64°F Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms 5 mph E 51%
Monday 78°F Chance Rain Showers 6 mph NE 43%
Monday Night 58°F Chance Showers And Thunderstorms 6 mph NE 52%
Tuesday 76°F Rain Showers Likely 5 mph NE 56%
Tuesday Night 59°F Showers And Thunderstorms Likely 5 mph NE 73%
Wednesday 74°F Showers And Thunderstorms Likely 7 mph E 74%
Wednesday Night 56°F Showers And Thunderstorms Likely 6 mph E 74%
Thursday 72°F Chance Showers And Thunderstorms 6 mph E 37%
Thursday Night 54°F Slight Chance Rain Showers then Mostly Cloudy 5 mph NE 24%
Friday 73°F Mostly Sunny 2 to 6 mph N 11%
Friday Night 52°F Partly Cloudy 5 mph N 11%

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 20, 2026.