Cynthiana, IN Weather & Growing Conditions
Today
99°F
Sunny
Sunny. High near 99, with temperatures falling to around 97 in the afternoon. West southwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 7 mph WSW | 8% |
| 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 | Mostly Cloudy | 5 to 12 mph N | 10% |
| Wednesday | 76°F | Mostly Sunny | 5 to 9 mph N | 6% |
| 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% |
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 19, 2026.