South New Castle, PA Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for South New Castle, PA in one place.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.
Local Weather Overview
This forecast page for South 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 5:54 AM EDT.
The active forecast window currently covers Apr 16 to Apr 19, 2026 for South New Castle, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 19, 2026
- Latest sync
- Apr 13, 2026 5:54 AM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in South New Castle
Saturday looks like the warmest upcoming period in South New Castle at 85 degrees F.
Saturday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Sunday at about 8 to 13 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 5:54 AM EDT
- Coverage
- 4 days
- Time zone
- America/New_York
- Forecast office
- PBZ
- Radar station
- KPBZ
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 80.
Partly cloudy, with a low around 57.
A chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
A chance of rain showers. Partly sunny, with a high near 65.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Chance Rain Showers
|
82°F |
5 to 12 mph
SW
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms
|
57°F |
5 to 9 mph
SW
|
|
Friday
Apr 17
|
Slight Chance Rain Showers then Mostly Sunny
|
80°F |
7 mph
W
|
|
Friday Night
Apr 17
|
Partly Cloudy
|
57°F |
5 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
85°F |
5 to 12 mph
S
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
49°F |
7 to 10 mph
SW
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
65°F |
8 to 13 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South New Castle.
