Mount Gretna, PA Weather Forecast
Local 7-day forecast
Chance Rain Showers then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Mount Gretna, PA in one place.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 30%.
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: Apr 13, 2026 11:13 PM EDT.
The active forecast window currently covers Apr 17 to Apr 20, 2026 for Mount Gretna, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 20, 2026
- Latest sync
- Apr 13, 2026 11:13 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Mount Gretna
Saturday looks like the warmest upcoming period in Mount Gretna at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Sunday at about 9 to 17 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 11:13 PM EDT
- Coverage
- 4 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 showers and thunderstorms before 8pm. Partly cloudy, with a low around 57.
Mostly sunny, with a high near 82.
A chance of rain showers after 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a high near 73. Chance of precipitation is 50%.
A chance of rain showers before 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Mostly sunny, with a high near 57.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
79°F |
6 to 10 mph
W
|
|
Friday Night
Apr 17
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
57°F |
3 to 8 mph
N
|
|
Saturday
Apr 18
|
Mostly Sunny
|
82°F |
3 to 12 mph
SE
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
57°F |
12 mph
SE
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
73°F |
9 to 17 mph
W
|
|
Sunday Night
Apr 19
|
Chance Rain Showers
|
38°F |
13 to 17 mph
W
|
|
Monday
Apr 20
|
Mostly Sunny
|
57°F |
14 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mount Gretna.