Harman US

Coldiron, KY Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Coldiron, a community in Harlan County, Kentucky.

Today
90°F
Areas Of Fog then Slight Chance Showers And Thunderstorms
Areas of fog before 9am, then a slight chance of showers and thunderstorms. Mostly sunny. High near 90, with temperatures falling to around 89 in the afternoon. Heat index values as high as 96. Northwest wind around 1 mph. Chance of precipitation is 20%.

7-day forecast for Coldiron

WhenTempForecastWindPrecip
Today 90°F Areas Of Fog then Slight Chance Showers And Thunderstorms 1 mph NW 17%
Tonight 66°F Chance Showers And Thunderstorms then Areas Of Fog 1 mph ESE 31%
Sunday 89°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 0 to 5 mph S 30%
Sunday Night 66°F Chance Showers And Thunderstorms 2 mph SSE 29%
Monday 88°F Slight Chance Rain Showers then Chance Showers And Thunderstorms 2 mph SSW 40%
Monday Night 64°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 1 mph E 65%
Tuesday 80°F Showers And Thunderstorms 1 mph SSW 82%
Tuesday Night 61°F Showers And Thunderstorms 2 mph E 76%
Wednesday 75°F Rain Showers 2 mph SSE 81%
Wednesday Night 58°F Showers And Thunderstorms 2 mph ESE 78%
Thursday 75°F Chance Rain Showers 2 mph N 46%
Thursday Night 56°F Chance Rain Showers then Partly Cloudy 2 mph NNE 26%
Friday 74°F Partly Sunny 0 to 5 mph NNE 12%
Friday Night 54°F Partly Cloudy 1 to 5 mph NNE 12%

Forecast source: National Weather Service (api.weather.gov) for Coldiron (36.828, -83.453). Updated through the day.

Growing snapshot for Coldiron

Last spring frost
Apr 15
First fall frost
Oct 30
Growing season
197 days
Hardiness zone
7a

More local growing data for Coldiron: nearby ZIP 40819 weather · frost dates · planting calendar · Kentucky frost dates

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Climate data from the nearest NOAA station, Baxter, Ky (7.3 mi from Coldiron). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.