New Castle, PA Weather Forecast
Local 7-day forecast
Chance Rain Showers then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for New Castle, PA in one place.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 74. Chance of precipitation is 50%.
Local Weather Overview
This forecast page for New Castle, 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 13, 2026 11:22 PM EDT.
The active forecast window currently covers Apr 17 to Apr 20, 2026 for New Castle, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 20, 2026
- Latest sync
- Apr 13, 2026 11:22 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in New Castle
Saturday looks like the warmest upcoming period in New Castle at 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Sunday at about 10 to 16 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 11:22 PM EDT
- Coverage
- 4 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 slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 54.
A chance of rain showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Rain showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
A chance of rain showers. Mostly cloudy, with a high near 65. Chance of precipitation is 50%.
A chance of rain showers before 11pm, then a slight chance of rain and snow showers between 11pm and 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Mostly sunny, with a high near 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
74°F |
7 to 10 mph
W
|
|
Friday Night
Apr 17
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
54°F |
3 to 8 mph
S
|
|
Saturday
Apr 18
|
Partly Sunny then Chance Rain Showers
|
81°F |
3 to 10 mph
S
|
|
Saturday Night
Apr 18
|
Rain Showers Likely
|
49°F |
10 mph
SW
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
65°F |
10 to 16 mph
W
|
|
Sunday Night
Apr 19
|
Slight Chance Rain And Snow Showers
|
31°F |
12 to 15 mph
W
|
|
Monday
Apr 20
|
Mostly Sunny
|
52°F |
14 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Castle.