Cynthiana, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cynthiana, a town in Gibson County, Indiana.
This Afternoon
67°F
Mostly Cloudy
Mostly cloudy. High near 67, with temperatures falling to around 61 in the afternoon. West wind 8 to 13 mph, with gusts as high as 18 mph.
7-day forecast for Cynthiana
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Mostly Cloudy | 8 to 13 mph W | 0% |
| Tonight | 47°F | Partly Cloudy | 2 to 6 mph WSW | 0% |
| Thursday | 64°F | Sunny | 3 to 10 mph WSW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 3 mph WNW | 1% |
| Friday | 57°F | Partly Sunny | 3 to 12 mph NNW | 1% |
| Friday Night | 36°F | Mostly Clear | 2 to 9 mph N | 0% |
| Saturday | 54°F | Sunny | 2 to 6 mph N | 0% |
| Saturday Night | 33°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 58°F | Sunny | 0 to 5 mph NW | 0% |
| Sunday Night | 35°F | Mostly Clear | 2 mph NW | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph SSW | 0% |
| Monday Night | 38°F | Clear | 2 mph SW | 1% |
| Tuesday | 64°F | Sunny | 1 to 5 mph WSW | 1% |
| Tuesday Night | 40°F | Mostly Clear | 1 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Cynthiana (38.187, -87.709). Updated through the day.
Growing snapshot for Cynthiana
Last spring frost
Apr 13
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
7a
More local growing data for Cynthiana: nearby ZIP 47612 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Buckskin
Decker
Fort Branch
Francisco
Griffin
Haubstadt
Hazleton
Johnson
Mackey
Oakland City
Owensville
Patoka
Princeton
Somerville
Climate data from the nearest NOAA station, Princeton 1 W, In (12.7 mi from Cynthiana). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.