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 67. East wind 2 to 6 mph. Chance of precipitation is 50%. 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 13, 2026 11:45 PM EDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Chambersburg, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 11:45 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Chambersburg
Friday looks like the warmest upcoming period in Chambersburg at 77 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Saturday at about 15 to 20 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 11:45 PM EDT
- 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
Rain showers likely. Cloudy, with a low around 58. South wind 3 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers. Partly sunny, with a high near 77. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 2am. Partly cloudy, with a low around 41. Chance of precipitation is 40%.
Sunny, with a high near 53.
Areas of frost after 2am. Mostly clear, with a low around 34.
Widespread frost before 9am. Sunny, with a high near 61.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 65.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Chance Rain Showers
|
67°F |
2 to 6 mph
E
|
|
Thursday Night
Oct 15
|
Rain Showers Likely
|
58°F |
3 to 12 mph
S
|
|
Friday
Oct 16
|
Chance Rain Showers
|
77°F |
12 to 18 mph
SW
|
|
Friday Night
Oct 16
|
Chance Rain Showers
|
41°F |
18 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
53°F |
15 to 20 mph
NW
|
|
Saturday Night
Oct 17
|
Mostly Clear then Areas Of Frost
|
34°F |
1 to 12 mph
W
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
61°F |
1 to 6 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
65°F |
2 to 6 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
45°F |
0 to 3 mph
S
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
68°F |
1 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chambersburg.
