Mount Gretna, PA Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Mount Gretna, PA in one place.
Partly cloudy, with a low around 54. North wind around 8 mph.
Local Weather Overview
This forecast page for Mount Gretna, 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 4:32 AM EDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Mount Gretna, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 4:32 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Mount Gretna
Friday looks like the warmest upcoming period in Mount Gretna at 78 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 16 to 20 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 4:32 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KCCX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain after 3pm. Partly sunny, with a high near 65. East wind 5 to 8 mph. Chance of precipitation is 20%.
A chance of rain before 2am, then rain likely and a slight chance of thunderstorms. Cloudy, with a low around 56. Southeast wind 6 to 12 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain before 8am, then a chance of showers and thunderstorms between 3pm and 5pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 78. South wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Northwest wind 16 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 51. Chance of precipitation is 20%.
Areas of frost after 4am. Mostly clear, with a low around 34.
Widespread frost before 9am. Sunny, with a high near 55.
Mostly clear, with a low around 38.
Sunny, with a high near 61.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 63.
Partly cloudy, with a low around 45.
Sunny, with a high near 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 15
|
Partly Cloudy
|
54°F |
8 mph
N
|
|
Thursday
Oct 15
|
Partly Sunny then Slight Chance Light Rain
|
65°F |
5 to 8 mph
E
|
|
Thursday Night
Oct 15
|
Light Rain Likely
|
56°F |
6 to 12 mph
SE
|
|
Friday
Oct 16
|
Chance Light Rain then Chance Showers And Thunderstorms
|
78°F |
10 to 16 mph
S
|
|
Friday Night
Oct 16
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
45°F |
16 to 20 mph
NW
|
|
Saturday
Oct 17
|
Slight Chance Rain Showers then Mostly Sunny
|
51°F |
16 to 20 mph
N
|
|
Saturday Night
Oct 17
|
Mostly Clear then Areas Of Frost
|
34°F |
3 to 14 mph
N
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
55°F |
3 to 7 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
2 to 7 mph
E
|
|
Monday
Oct 19
|
Sunny
|
61°F |
2 to 8 mph
SE
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
1 to 5 mph
NE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
63°F |
5 mph
N
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
45°F |
5 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
63°F |
6 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mount Gretna.