Greencastle, IN Weather Forecast
Local 7-day forecast
Isolated Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Greencastle, IN in one place.
Isolated showers and thunderstorms between 2pm and 4pm, then scattered showers and thunderstorms between 4pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy. High near 76, with temperatures falling to around 73 in the afternoon. South southeast wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Greencastle, IN is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 2:45 PM EDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Greencastle, IN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 2:45 PM EDT
- Forecast office
- IND
- Source
- NOAA / NWS
Daily Outlook
This Week in Greencastle
This Afternoon looks like the warmest upcoming period in Greencastle at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 17 mph WNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 2:45 PM EDT
- Coverage
- 7 days
- Time zone
- America/Indiana/Indianapolis
- Forecast office
- IND
- Radar station
- KIND
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy. Low around 50, with temperatures rising to around 59 overnight. Southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Scattered rain showers. Mostly cloudy, with a high near 57. West northwest wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Scattered rain showers before 8pm. Mostly cloudy, with a low around 38. North northwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Sunny, with a high near 56. North northeast wind 5 to 9 mph, with gusts as high as 18 mph.
Areas of frost after 3am. Clear, with a low around 34. East wind around 3 mph.
Areas of frost before 9am. Sunny, with a high near 64. South southeast wind 2 to 6 mph.
Clear, with a low around 39. South southeast wind around 5 mph.
Sunny, with a high near 68. South wind 1 to 5 mph.
Partly cloudy, with a low around 43. East southeast wind 0 to 3 mph.
Mostly sunny, with a high near 70.
Mostly clear, with a low around 44.
Sunny, with a high near 71.
Mostly clear, with a low around 46.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Isolated Showers And Thunderstorms
|
76°F |
8 mph
SSE
|
|
Tonight
Oct 15
|
Chance Showers And Thunderstorms
|
50°F |
8 to 15 mph
SW
|
|
Friday
Oct 16
|
Scattered Rain Showers
|
57°F |
17 mph
WNW
|
|
Friday Night
Oct 16
|
Scattered Rain Showers then Mostly Cloudy
|
38°F |
10 to 16 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
56°F |
5 to 9 mph
NNE
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
34°F |
3 mph
E
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
64°F |
2 to 6 mph
SSE
|
|
Sunday Night
Oct 18
|
Clear
|
39°F |
5 mph
SSE
|
|
Monday
Oct 19
|
Sunny
|
68°F |
1 to 5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
0 to 3 mph
ESE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
70°F |
0 to 3 mph
ESE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
44°F |
3 mph
E
|
|
Wednesday
Oct 21
|
Sunny
|
71°F |
1 to 5 mph
ESE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
46°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Greencastle.
