Harristown, PA Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Harristown, PA in one place.
Partly cloudy, with a low around 55. North wind around 9 mph.
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: Oct 15, 2026 4:04 AM EDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Harristown, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 4:04 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Harristown
Friday looks like the warmest upcoming period in Harristown at 78 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Saturday at about 16 to 20 mph N.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 4:04 AM EDT
- Coverage
- 7 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
A chance of rain after 2pm. Mostly sunny, with a high near 66. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
A chance of rain before 2am, then rain likely and a slight chance of thunderstorms. Cloudy, with a low around 55. Southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain before 8am, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 46. Northwest wind 12 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 52. Chance of precipitation is 20%.
Areas of frost after 3am. Mostly clear, with a low around 34.
Areas of frost before 9am. Sunny, with a high near 56.
Mostly clear, with a low around 38.
Sunny, with a high near 61.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 64.
Partly cloudy, with a low around 44.
Sunny, with a high near 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 15
|
Partly Cloudy
|
55°F |
9 mph
N
|
|
Thursday
Oct 15
|
Mostly Sunny then Chance Light Rain
|
66°F |
3 to 7 mph
NE
|
|
Thursday Night
Oct 15
|
Light Rain Likely
|
55°F |
5 to 10 mph
SE
|
|
Friday
Oct 16
|
Chance Light Rain then Chance Showers And Thunderstorms
|
78°F |
14 mph
S
|
|
Friday Night
Oct 16
|
Showers And Thunderstorms Likely
|
46°F |
12 to 17 mph
NW
|
|
Saturday
Oct 17
|
Slight Chance Rain Showers then Mostly Sunny
|
52°F |
16 to 20 mph
N
|
|
Saturday Night
Oct 17
|
Mostly Clear then Areas Of Frost
|
34°F |
3 to 14 mph
N
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
56°F |
5 mph
NE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
1 to 5 mph
E
|
|
Monday
Oct 19
|
Sunny
|
61°F |
1 to 7 mph
E
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
1 to 5 mph
NE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
64°F |
1 to 5 mph
N
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
44°F |
3 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
64°F |
5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harristown.