South New Castle, PA Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for South New Castle, PA in one place.
Rain showers. Mostly cloudy, with a high near 73. Southwest wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
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: Oct 14, 2026 10:23 PM EDT.
The active forecast window currently covers Oct 16 to Oct 21, 2026 for South New Castle, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 16 to Oct 21, 2026
- Latest sync
- Oct 14, 2026 10:23 PM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in South New Castle
Friday looks like the warmest upcoming period in South New Castle at 73 degrees F.
Saturday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday at about 10 to 15 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 10:23 PM EDT
- Coverage
- 6 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
Rain showers before 2am. Mostly cloudy, with a low around 36. Northwest wind around 12 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 52.
Mostly clear, with a low around 31.
Sunny, with a high near 61.
Mostly clear, with a low around 33.
Sunny, with a high near 66.
Partly cloudy, with a low around 38.
Mostly sunny, with a high near 67.
Mostly clear, with a low around 39.
Sunny, with a high near 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Rain Showers
|
73°F |
10 to 15 mph
SW
|
|
Friday Night
Oct 16
|
Rain Showers
|
36°F |
12 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
52°F |
13 mph
N
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
31°F |
0 to 7 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
61°F |
1 to 5 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
33°F |
3 mph
S
|
|
Monday
Oct 19
|
Sunny
|
66°F |
5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
38°F |
2 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
67°F |
2 mph
SW
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
39°F |
1 mph
NE
|
|
Wednesday
Oct 21
|
Sunny
|
69°F |
0 to 3 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South New Castle.
