Chambersburg, PA Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Chambersburg, PA in one place.
A chance of rain showers. Mostly cloudy, with a high near 64. Southeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Chambersburg, 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 Chambersburg, 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 Chambersburg
Friday looks like the warmest upcoming period in Chambersburg at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 10 to 15 mph SW.
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 58. 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 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 8pm. Mostly cloudy, with a low around 44. Northwest wind 10 to 15 mph, with gusts as high as 24 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 12 to 15 mph, with gusts as high as 25 mph.
Areas of frost after 2am. Clear, with a low around 34.
Widespread frost before 9am. Sunny, with a high near 59.
Mostly clear, with a low around 37.
Areas of frost before 8am. Sunny, with a high near 63.
Mostly clear, with a low around 40.
Mostly sunny, with a high near 67.
Mostly clear, with a low around 43.
Sunny, with a high near 68.
Mostly clear, with a low around 42.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Chance Rain Showers
|
64°F |
5 mph
SE
|
|
Tonight
Oct 15
|
Rain Showers Likely
|
58°F |
5 to 9 mph
S
|
|
Friday
Oct 16
|
Showers And Thunderstorms Likely
|
84°F |
10 to 15 mph
SW
|
|
Friday Night
Oct 16
|
Chance Rain Showers then Mostly Cloudy
|
44°F |
10 to 15 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
54°F |
12 to 15 mph
N
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
34°F |
1 to 9 mph
N
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
59°F |
3 mph
NE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
37°F |
3 mph
S
|
|
Monday
Oct 19
|
Areas Of Frost then Sunny
|
63°F |
0 to 5 mph
SE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
40°F |
2 mph
E
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
67°F |
2 mph
N
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
43°F |
3 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
68°F |
3 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 Chambersburg.
