Harristown, PA Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Harristown, PA in one place.
Showers and thunderstorms. Mostly cloudy, with a high near 84. South wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Harristown, 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: Aug 2, 2026 2:19 AM EDT.
The active forecast window currently covers Aug 3 to Aug 8, 2026 for Harristown, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 3 to Aug 8, 2026
- Latest sync
- Aug 2, 2026 2:19 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Harristown
Friday looks like the warmest upcoming period in Harristown at 87 degrees F.
Monday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Wednesday at about 3 to 8 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 2, 2026 2:19 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KDOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Mostly cloudy, with a low around 67. Southeast wind 2 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
A slight chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Showers and thunderstorms likely before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 3
|
Showers And Thunderstorms
|
84°F |
7 mph
S
|
|
Monday Night
Aug 3
|
Showers And Thunderstorms
|
67°F |
2 to 6 mph
SE
|
|
Tuesday
Aug 4
|
Partly Sunny then Chance Showers And Thunderstorms
|
84°F |
2 to 6 mph
E
|
|
Tuesday Night
Aug 4
|
Chance Showers And Thunderstorms
|
68°F |
6 mph
SE
|
|
Wednesday
Aug 5
|
Showers And Thunderstorms Likely
|
85°F |
3 to 8 mph
S
|
|
Wednesday Night
Aug 5
|
Showers And Thunderstorms Likely
|
69°F |
5 to 8 mph
S
|
|
Thursday
Aug 6
|
Partly Sunny then Chance Showers And Thunderstorms
|
86°F |
7 mph
SW
|
|
Thursday Night
Aug 6
|
Chance Showers And Thunderstorms
|
70°F |
2 to 6 mph
S
|
|
Friday
Aug 7
|
Mostly Sunny then Chance Showers And Thunderstorms
|
87°F |
2 to 6 mph
SW
|
|
Friday Night
Aug 7
|
Chance Showers And Thunderstorms
|
69°F |
5 mph
SW
|
|
Saturday
Aug 8
|
Mostly Sunny then Chance Showers And Thunderstorms
|
87°F |
2 to 6 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harristown.