Mercersburg, PA Weather Forecast
Local 7-day forecast
Chance Light Rain then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Mercersburg, PA in one place.
A chance of rain before noon. Mostly cloudy, with a high near 59. Northwest wind 0 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Mercersburg, 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: Nov 11, 2026 12:23 PM EST.
The active forecast window currently covers Nov 12 to Nov 17, 2026 for Mercersburg, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 12 to Nov 17, 2026
- Latest sync
- Nov 11, 2026 12:23 PM EST
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Mercersburg
Thursday looks like the warmest upcoming period in Mercersburg at 59 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 28 degrees F.
The strongest winds are forecast for Saturday at about 12 to 15 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Nov 11, 2026 12:23 PM EST
- Coverage
- 6 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
Mostly cloudy, with a low around 37. Northwest wind around 12 mph, with gusts as high as 24 mph.
Mostly sunny, with a high near 49. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.
Mostly cloudy, with a low around 33.
Partly sunny, with a high near 48.
Partly cloudy, with a low around 33.
Mostly sunny, with a high near 51.
Partly cloudy, with a low around 32.
Mostly sunny, with a high near 52.
Partly cloudy, with a low around 30.
Mostly sunny, with a high near 53.
Mostly clear, with a low around 28.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Nov 12
|
Chance Light Rain then Mostly Cloudy
|
59°F |
0 to 10 mph
NW
|
|
Thursday Night
Nov 12
|
Mostly Cloudy
|
37°F |
12 mph
NW
|
|
Friday
Nov 13
|
Mostly Sunny
|
49°F |
10 to 14 mph
NW
|
|
Friday Night
Nov 13
|
Mostly Cloudy
|
33°F |
7 to 10 mph
NW
|
|
Saturday
Nov 14
|
Partly Sunny
|
48°F |
12 to 15 mph
NW
|
|
Saturday Night
Nov 14
|
Partly Cloudy
|
33°F |
9 mph
NW
|
|
Sunday
Nov 15
|
Mostly Sunny
|
51°F |
7 to 12 mph
NW
|
|
Sunday Night
Nov 15
|
Partly Cloudy
|
32°F |
6 mph
NW
|
|
Monday
Nov 16
|
Mostly Sunny
|
52°F |
6 mph
NW
|
|
Monday Night
Nov 16
|
Partly Cloudy
|
30°F |
3 mph
NW
|
|
Tuesday
Nov 17
|
Mostly Sunny
|
53°F |
3 mph
N
|
|
Tuesday Night
Nov 17
|
Mostly Clear
|
28°F |
1 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mercersburg.
