News Headlines
- When does the first frost occur in Central PA? See when the first 36 degree temperatures typically occur.
- A 5th tornado has been determined to have occurred in Central PA (Burnside Twp in northern Centre County) on July 18th, 2026. See details.
- See information on the Cyclone (PA) Tornado of Sept 9th, 2026
- See information on 3 Tornadoes that occurred on September 1st, 2026
Current conditions at
Hagerstown, Washington County Regional Airport (KHGR)
Lat: 39.71°NLon: 77.73°WElev: 702ft.
Fair
69°F
21°C
| Humidity | 73% |
| Wind Speed | N 6 mph |
| Barometer | 30.15 in (1021.3 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 18 Sep 10:53 pm EDT |
Extended Forecast for
Chambersburg PA
Tonight
Low: 53 °F
Mostly Clear
Saturday
High: 77 °F
Mostly Sunny
Saturday Night
Low: 64 °F
Mostly Cloudy
then Chance
ShowersSunday
High: 79 °F
Chance
Showers then
ShowersSunday Night
Low: 59 °F
Showers
Monday
High: 70 °F
Chance
ShowersMonday Night
Low: 55 °F
Showers
LikelyTuesday
High: 63 °F
Showers
LikelyTuesday Night
Low: 50 °F
Showers
Likely
Detailed Forecast
Tonight
Mostly clear, with a low around 53. Northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 77. Northeast wind around 5 mph becoming calm in the morning.
Saturday Night
A chance of showers before 4am, then a chance of showers after 5am. Mostly cloudy, with a low around 64. Light and variable wind becoming south 5 to 7 mph in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 59. Calm wind becoming north 5 to 7 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of showers, mainly after 8am. Partly sunny, with a high near 70. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers likely, mainly after 2am. Cloudy, with a low around 55. Chance of precipitation is 60%.
Tuesday
Showers likely. Cloudy, with a high near 63. Chance of precipitation is 70%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 68.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Chambersburg PA
39.95°N 77.65°W (Elev. 600 ft)
39.95°N 77.65°W (Elev. 600 ft)
10:01 pm EDT Sep 18, 2026
11pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026
Additional Resources
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Hourly Weather Forecast
