New Castle, PA Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for New Castle, PA in one place.
Partly sunny, with a high near 71. East wind around 5 mph.
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: Oct 15, 2026 3:35 PM EDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for New Castle, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 3:35 PM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in New Castle
Friday looks like the warmest upcoming period in New Castle at 72 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 14 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 3:35 PM EDT
- Coverage
- 7 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 slight chance of showers and thunderstorms between 11pm and midnight, then showers and thunderstorms likely. Mostly cloudy. Low around 62, with temperatures rising to around 70 overnight. South wind 3 to 12 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms. Mostly cloudy. High near 72, with temperatures falling to around 59 in the afternoon. West wind 10 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers likely before 11pm. Mostly cloudy, with a low around 35. Northwest wind 8 to 12 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 52. North wind 8 to 12 mph, with gusts as high as 25 mph.
Widespread frost after 10pm. Clear, with a low around 31.
Widespread frost before 9am. Sunny, with a high near 62.
Areas of frost after 4am. Mostly clear, with a low around 34.
Areas of frost before 9am. Sunny, with a high near 66.
Partly cloudy, with a low around 36.
Mostly sunny, with a high near 68.
Mostly clear, with a low around 38.
Sunny, with a high near 68.
Mostly clear, with a low around 38.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Partly Sunny
|
71°F |
5 mph
E
|
|
Tonight
Oct 15
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
62°F |
3 to 12 mph
S
|
|
Friday
Oct 16
|
Showers And Thunderstorms
|
72°F |
10 to 14 mph
W
|
|
Friday Night
Oct 16
|
Rain Showers Likely then Mostly Cloudy
|
35°F |
8 to 12 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
52°F |
8 to 12 mph
N
|
|
Saturday Night
Oct 17
|
Widespread Frost
|
31°F |
0 to 6 mph
NW
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
62°F |
0 to 5 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear then Areas Of Frost
|
34°F |
3 mph
S
|
|
Monday
Oct 19
|
Areas Of Frost then Sunny
|
66°F |
3 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
36°F |
1 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
68°F |
2 mph
N
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
38°F |
1 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
68°F |
2 mph
NE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
38°F |
1 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Castle.
