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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.