Greencastle, PA Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Greencastle, PA in one place.
A chance of rain showers. Cloudy, with a high near 63. Southeast wind around 5 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, PA 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 6:15 PM EDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Greencastle, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 6:15 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Greencastle
Friday looks like the warmest upcoming period in Greencastle at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday Night at about 12 to 16 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 6:15 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KLWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers likely. Cloudy, with a low around 59. South wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny. High near 84, with temperatures falling to around 75 in the afternoon. Southwest wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 8pm. Mostly cloudy, with a low around 45. Northwest wind 12 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 54. North wind 13 to 16 mph, with gusts as high as 24 mph.
Areas of frost after 3am. Clear, with a low around 34.
Widespread frost before 9am. Sunny, with a high near 58.
Mostly clear, with a low around 36.
Patchy frost before 8am. Sunny, with a high near 62.
Mostly clear, with a low around 39.
Mostly sunny, with a high near 67.
Partly cloudy, with a low around 43.
Sunny, with a high near 67.
Mostly clear, with a low around 42.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Chance Rain Showers
|
63°F |
5 mph
SE
|
|
Tonight
Oct 15
|
Rain Showers Likely
|
59°F |
5 to 9 mph
S
|
|
Friday
Oct 16
|
Showers And Thunderstorms Likely
|
84°F |
9 to 15 mph
SW
|
|
Friday Night
Oct 16
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
45°F |
12 to 16 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
54°F |
13 to 16 mph
N
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
34°F |
2 to 10 mph
N
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
58°F |
1 to 5 mph
E
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
36°F |
0 to 3 mph
SE
|
|
Monday
Oct 19
|
Patchy Frost then Sunny
|
62°F |
0 to 5 mph
E
|
|
Monday Night
Oct 19
|
Mostly Clear
|
39°F |
0 to 3 mph
NE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
67°F |
3 mph
N
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
43°F |
3 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
67°F |
5 mph
N
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
42°F |
3 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Greencastle.
