Weather in Duncannon, PA
Updated 2026-09-26 10:00 local time · ZIP codes 17020
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
62°15% rain63°14% rain66°13% rain
66°29% rain
65°15% rain63°15% rain64°14% rain61°22% rain60°36% rain
61°25% rain61°31% rain
60°15% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
There is a moderate rain chance, peaking near 36%.
It feels like 54°F with winds near 13 mph.
65°F, 15% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 32 mph.
Current temperature is 62°F, wind 13 mph, rain chance up to 36%.
UV index is 2.
Local weather characteristics in Duncannon
Pennsylvania has four seasons and varied terrain. Western and northern areas are generally cooler and snowier, while southeastern areas are often milder.
Duncannon is part of the Northeast weather region. The forecast point is near 40.40°N latitude and 77.02°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Duncannon weather today
Overcast and 62°F in Duncannon, PA. Today's high is 66°F with a 41% rain chance. Winds are around 13 mph with gusts near 32 mph. Relative humidity is 62%, pressure is 29.97 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Duncannon
Sunrise is at 06:59 AM and sunset is at 06:59 PM. Tomorrow's forecast calls for Overcast with a high near 60°F and a low near 54°F. The maximum rain chance is 72%.