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
Current conditions at
Hagerstown, Washington County Regional Airport (KHGR)
Lat: 39.71°NLon: 77.73°WElev: 702ft.
Overcast
57°F
14°C
| Humidity | 69% |
| Wind Speed | NE 8 mph |
| Barometer | 30.43 in (1031.6 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 23 Sep 10:53 am EDT |
Extended Forecast for
4 Miles S Mercersburg PA
Today
High: 65 °F
Mostly Cloudy
Tonight
Low: 47 °F
Partly Cloudy
Thursday
High: 65 °F
Mostly Sunny
Thursday Night
Low: 46 °F
Mostly Clear
Friday
High: 72 °F
Sunny
Friday Night
Low: 50 °F
Mostly Clear
Saturday
High: 74 °F
Sunny
Saturday Night
Low: 52 °F
Partly Cloudy
Sunday
High: 71 °F
Mostly Sunny
Detailed Forecast
Today
Mostly cloudy, with a high near 65. East wind around 11 mph.
Tonight
Partly cloudy, with a low around 47. North wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 65. Northeast wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 46. North wind 3 to 7 mph.
Friday
Sunny, with a high near 72. North wind 9 to 11 mph.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles S Mercersburg PA
39.76°N 77.89°W (Elev. 587 ft)
39.76°N 77.89°W (Elev. 587 ft)
9:26 am EDT Sep 23, 2026
11am EDT Sep 23, 2026-6pm EDT Sep 29, 2026
Additional Resources
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