Duncannon, PA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Duncannon, PA in one place.
Mostly sunny, with a high near 86. South wind 2 to 9 mph.
Local Weather Overview
This forecast page for Duncannon, PA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 15, 2026 5:44 PM EDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for Duncannon, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 5:44 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncannon
Thursday looks like the warmest upcoming period in Duncannon at 86 degrees F.
Monday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Sunday at about 9 to 14 mph NW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 5:44 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KCCX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers after 8pm. Mostly cloudy, with a low around 64. West wind 5 to 8 mph. Chance of precipitation is 40%.
A slight chance of rain showers. Mostly sunny, with a high near 77. Northwest wind around 7 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 56. Chance of precipitation is 20%.
A chance of rain showers after 2pm. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
A chance of rain showers before 8pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
A chance of rain showers. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
A chance of rain showers before 2am. Partly cloudy, with a low around 35. Chance of precipitation is 30%.
A slight chance of snow showers between 8am and 2pm. Mostly sunny, with a high near 51.
Mostly clear, with a low around 31.
Sunny, with a high near 63.
Partly cloudy, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Mostly Sunny
|
86°F |
2 to 9 mph
S
|
|
Thursday Night
Apr 16
|
Chance Rain Showers
|
64°F |
5 to 8 mph
W
|
|
Friday
Apr 17
|
Slight Chance Rain Showers
|
77°F |
7 mph
NW
|
|
Friday Night
Apr 17
|
Slight Chance Rain Showers then Mostly Clear
|
56°F |
1 to 5 mph
NE
|
|
Saturday
Apr 18
|
Mostly Sunny then Chance Rain Showers
|
79°F |
1 to 10 mph
SE
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
48°F |
10 mph
S
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
60°F |
9 to 14 mph
NW
|
|
Sunday Night
Apr 19
|
Chance Rain Showers
|
35°F |
8 to 14 mph
NW
|
|
Monday
Apr 20
|
Slight Chance Snow Showers
|
51°F |
13 mph
NW
|
|
Monday Night
Apr 20
|
Mostly Clear
|
31°F |
5 to 12 mph
NW
|
|
Tuesday
Apr 21
|
Sunny
|
63°F |
5 to 9 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
48°F |
5 to 8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncannon.
