Greencastle, IN Weather & Growing Conditions
This Afternoon
68°F
Slight Chance Light Rain
A slight chance of rain before 2pm. Mostly cloudy. High near 68, with temperatures falling to around 61 in the afternoon. Southwest wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Slight Chance Light Rain | 13 mph SW | 16% |
| Tonight | 47°F | Mostly Cloudy | 5 to 10 mph SW | 5% |
| Thursday | 61°F | Partly Sunny | 6 to 13 mph SW | 1% |
| Thursday Night | 43°F | Slight Chance Light Rain then Mostly Cloudy | 2 to 7 mph W | 16% |
| Friday | 53°F | Mostly Cloudy | 5 to 10 mph NNW | 7% |
| Friday Night | 33°F | Partly Cloudy | 3 to 8 mph NNW | 3% |
| Saturday | 53°F | Sunny | 2 to 7 mph NW | 0% |
| Saturday Night | 30°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Sunday | 57°F | Sunny | 0 to 7 mph W | 0% |
| Sunday Night | 32°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Monday | 62°F | Sunny | 0 to 7 mph WNW | 0% |
| Monday Night | 37°F | Clear | 6 mph SW | 0% |
| Tuesday | 63°F | Sunny | 2 to 6 mph W | 2% |
| Tuesday Night | 37°F | Mostly Clear | 0 to 3 mph NNW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greencastle, IN
Last spring frost
Apr 27
First fall frost
Oct 15
Growing season
169 days
Hardiness zone
6a
Explore more for Greencastle, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Greencastle 1 W, In (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.