Harman US

Cynthiana, IN Weather & Growing Conditions

Tonight
73°F
Partly Cloudy
Partly cloudy. Low around 73, with temperatures rising to around 75 overnight. South southwest wind around 5 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 73°F Partly Cloudy 5 mph SSW 7%
Sunday 97°F Mostly Sunny 5 to 8 mph WSW 2%
Sunday Night 69°F Partly Cloudy then Chance Showers And Thunderstorms 7 mph N 36%
Monday 86°F Chance Showers And Thunderstorms 6 to 9 mph NE 44%
Monday Night 62°F Chance Showers And Thunderstorms 6 to 10 mph NE 44%
Tuesday 78°F Chance Showers And Thunderstorms 6 to 12 mph NNE 36%
Tuesday Night 59°F Partly Cloudy 5 to 12 mph N 10%
Wednesday 76°F Mostly Sunny 5 to 9 mph N 7%
Wednesday Night 58°F Partly Cloudy 2 to 9 mph N 2%
Thursday 77°F Mostly Sunny 3 to 7 mph N 1%
Thursday Night 59°F Partly Cloudy 2 to 7 mph NNE 1%
Friday 79°F Partly Sunny 2 to 8 mph NNE 4%
Friday Night 58°F Partly Cloudy 3 to 7 mph NNE 4%
Saturday 81°F Mostly Sunny 3 to 7 mph NE 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Cynthiana, IN

Last spring frost
Apr 13
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
7a

Explore more for Cynthiana, IN: full frost dates · planting calendar · Indiana frost dates

Climate data from the nearest NOAA station, Princeton 1 W, In (12.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.