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.
Light Rain
57°F
14°C
| Humidity | 90% |
| Wind Speed | N 9 mph |
| Barometer | 30.29 in (1026.8 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 22 Sep 6:53 pm EDT |
Extended Forecast for
Williamson PA
Tonight
Low: 52 °F
Showers
Likely then
Chance
ShowersWednesday
High: 65 °F
Slight Chance
Showers then
Mostly CloudyWednesday Night
Low: 48 °F
Mostly Cloudy
Thursday
High: 65 °F
Mostly Sunny
Thursday Night
Low: 46 °F
Mostly Clear
Friday
High: 72 °F
Sunny
Friday Night
Low: 50 °F
Partly Cloudy
Saturday
High: 71 °F
Mostly Sunny
Saturday Night
Low: 51 °F
Partly Cloudy
Detailed Forecast
Tonight
Showers likely, mainly before 9pm. Cloudy, with a low around 52. Northeast wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A slight chance of showers between 7am and 8am. Mostly cloudy, with a high near 65. Northeast wind around 9 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 48. Northeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 65. Northeast wind around 9 mph.
Thursday Night
Mostly clear, with a low around 46. North wind 3 to 6 mph.
Friday
Sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 76.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Williamson PA
39.86°N 77.81°W (Elev. 545 ft)
39.86°N 77.81°W (Elev. 545 ft)
3:26 pm EDT Sep 22, 2026
7pm EDT Sep 22, 2026-6pm EDT Sep 29, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
