Thunderstorms and Heavy Rainfall from the Plains to the Mid-Atlantic

Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota from this afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding through Wednesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Overcast

71°F

22°C

Humidity	87%
Wind Speed	E 3 mph
Barometer	30.05 in (1017.4 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Last update	7 Jul 11:56 am EDT

More Information:

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

Extended Forecast for

Duncannon PA

This Afternoon
High: 79 °F
Slight Chance
Showers
Tonight
Low: 66 °F
Chance
Showers and
Patchy Fog
Wednesday
High: 81 °F
Patchy Fog
then Mostly
Sunny
Wednesday Night
Low: 67 °F
Partly Cloudy
then Chance
Showers
Thursday
High: 84 °F
Showers
Likely then
Showers
Thursday Night
Low: 68 °F
Showers then
Slight Chance
Showers
Friday
High: 87 °F
Mostly Sunny
then Showers
Likely
Friday Night
Low: 66 °F
Showers
Likely then
Chance
Showers
Saturday
High: 84 °F
Partly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

A slight chance of showers after 3pm. Mostly cloudy, with a high near 79. Calm wind. Chance of precipitation is 20%.

Tonight

A chance of showers, mainly before 9pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday

Patchy fog before 10am. Otherwise, partly sunny, with a high near 81. Calm wind.

Wednesday Night

A chance of showers after 2am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Thursday

Showers likely, then showers and possibly a thunderstorm after 11am. High near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Low around 68. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.

Friday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

Saturday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

Sunday

A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 30%.

Sunday Night

A chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 87.