Greencastle, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greencastle, a city in Putnam County, Indiana.
Today
84°F
Sunny
Sunny, with a high near 84. East northeast wind around 2 mph.
7-day forecast for Greencastle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 2 mph ENE | 0% |
| Tonight | 61°F | Mostly Clear | 2 mph ENE | 0% |
| Wednesday | 84°F | Sunny | 0 to 3 mph SSW | 0% |
| Wednesday Night | 66°F | Partly Cloudy | 2 mph S | 7% |
| Thursday | 83°F | Scattered Showers And Thunderstorms | 2 to 6 mph SSW | 46% |
| Thursday Night | 67°F | Scattered Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 5 mph S | 58% |
| Friday | 82°F | Scattered Showers And Thunderstorms | 1 to 6 mph SW | 34% |
| Friday Night | 66°F | Scattered Showers And Thunderstorms | 1 to 6 mph SSW | 34% |
| Saturday | 84°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph SSW | 22% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SSW | 18% |
| Sunday | 86°F | Sunny | 3 to 9 mph SSW | 11% |
| Sunday Night | 70°F | Partly Cloudy | 5 to 9 mph SSW | 12% |
| Monday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 19% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 31% |
Forecast source: National Weather Service (api.weather.gov) for Greencastle (39.642, -86.846). Updated through the day.
Growing snapshot for Greencastle
Last spring frost
Apr 27
First fall frost
Oct 15
Growing season
169 days
Hardiness zone
6a
More local growing data for Greencastle: nearby ZIP 46135 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Greencastle 1 W, In (1.2 mi from Greencastle). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.