Hazardous Weather Conditions
Current conditions at
Harrisburg, Capital City Airport (KCXY)
Lat: 40.22°NLon: 76.86°WElev: 335ft.
Overcast
74°F
23°C
| Humidity | 88% |
| Wind Speed | SE 9 mph |
| Barometer | 30.03 in (1016.8 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 2 Sep 11:56 pm EDT |
Extended Forecast for
Duncannon PA
Heat Advisory September 3, 11:00am until September 3, 08:00pm
Flash Flood Warning until September 3, 04:00am
NOW until 4:00am Thu
Flash Flood Warning
Overnight
Low: 70 °F
Chance
T-storms and
Patchy FogThursday
High: 90 °F
Slight Chance
Showers and
Patchy Fog
then Chance
T-stormsThursday Night
Low: 71 °F
Chance
ShowersFriday
High: 87 °F
Slight Chance
Showers then
Showers
LikelyFriday Night
Low: 63 °F
Showers
Likely then
Partly CloudySaturday
High: 81 °F
Mostly Sunny
Saturday Night
Low: 56 °F
Mostly Clear
Sunday
High: 77 °F
Sunny
Detailed Forecast
Overnight
A chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms, mainly between 3pm and 4pm, then a chance of thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 90. Heat index values as high as 101. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Mostly cloudy, with a low around 71. Light west wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 63. Light northwest wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 57.
Labor Day
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Duncannon PA
40.4°N 77.02°W (Elev. 413 ft)
40.4°N 77.02°W (Elev. 413 ft)
12:03 am EDT Sep 3, 2026
12am EDT Sep 3, 2026-6pm EDT Sep 9, 2026
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