Monsoons Return to the Southwest U.S.; Potential Atlantic Tropical System Interaction

In Arizona and New Mexico, heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding Thursday into Sunday. The close proximity of Tropical Storm Humberto and a tropical wave (AL94) could lead to interaction between them, and details of their long-range track and intensity forecasts, and any potential impacts, are more uncertain than usual. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Light Rain Fog/Mist

71°F

22°C

Humidity	96%
Wind Speed	S 6 mph
Barometer	29.90 in (1012.9 mb)
Dewpoint	70°F (21°C)
Visibility	3.00 mi
Last update	25 Sep 4:53 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Chambersburg PA

Overnight
Low: 64 °F
Showers
Thursday
High: 78 °F
Showers then
Showers
Likely
Thursday Night
Low: 61 °F
Showers
Likely then
Mostly Cloudy
Friday
High: 80 °F
Partly Sunny
Friday Night
Low: 59 °F
Mostly Cloudy
Saturday
High: 76 °F
Chance
Showers
Saturday Night
Low: 60 °F
Chance
Showers
Sunday
High: 78 °F
Chance
Showers
Sunday Night
Low: 60 °F
Mostly Cloudy

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Low around 64. Calm wind. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 78. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 61. Light southwest wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

Partly sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the morning.

Friday Night

Mostly cloudy, with a low around 59. Calm wind.

Saturday

A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night

A chance of showers. Cloudy, with a low around 60. Chance of precipitation is 30%.

Sunday

A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.

Sunday Night

Mostly cloudy, with a low around 60.

Monday

A chance of showers after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 30%.

Monday Night

A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

Tuesday

Partly sunny, with a high near 78.