Pennsylvania · NWS PBZ office

New Castle, PA weather

It is 43°F and clear at New Castle Municipal Airport as of Oct 28, 5:05 AM EDT. Overnight: Mostly Cloudy, low near 48°F. Forecast from the National Weather Service, issued Oct 28, 3:16 AM EDT.

Updated Oct 28, 5:29 AM EDT (snapshot)

Current conditions

Temperature

43°F

Clear

Wind

Calm

Humidity 93% · dew point 41°F

Pressure · visibility

30.31 inHg

Visibility 10 mi

Observed at New Castle Municipal Airport (KUCP), Oct 28, 5:05 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the New Castle forecast zone right now.

Around the NWS PBZ forecast area

No active alerts in zones served by the PBZ office near New Castle.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Pennsylvania.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for New Castle (local time)
TimeTempForecastPrecip. chanceWind
Wed 5 AM48°FMostly Cloudy0%SE 2 mph
Wed 6 AM49°FMostly Cloudy1%SE 2 mph
Wed 7 AM49°FMostly Cloudy0%SE 2 mph
Wed 8 AM49°FMostly Cloudy1%SE 2 mph
Wed 9 AM51°FPartly Sunny1%SE 3 mph
Wed 10 AM57°FPartly Sunny1%S 3 mph
Wed 11 AM61°FPartly Sunny0%S 5 mph
Wed 12 PM66°FMostly Sunny0%S 5 mph
Wed 1 PM69°FSunny0%S 5 mph
Wed 2 PM70°FSunny1%S 5 mph
Wed 3 PM71°FSunny1%S 5 mph
Wed 4 PM72°FSunny1%S 5 mph
Wed 5 PM71°FSunny1%S 2 mph
Wed 6 PM68°FMostly Clear1%S 2 mph
Wed 7 PM64°FMostly Clear1%S 1 mph
Wed 8 PM57°FMostly Clear1%S 1 mph
Wed 9 PM55°FMostly Clear1%S 1 mph
Wed 10 PM53°FPartly Cloudy1%S 1 mph
Wed 11 PM51°FPartly Cloudy1%S 1 mph
Thu 12 AM50°FPartly Cloudy1%S 1 mph
Thu 1 AM49°FMostly Clear0%S 1 mph
Thu 2 AM48°FMostly Clear0%S 1 mph
Thu 3 AM47°FMostly Clear0%S 1 mph
Thu 4 AM46°FMostly Clear0%S 2 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in New Castle can differ.

7-day forecast

Overnight

Low 48°F

Mostly cloudy, with a low around 48. Southeast wind around 2 mph.

Wednesday

High 72°F·Low 45°F

Mostly sunny, with a high near 72. South wind around 5 mph.

Wednesday Night: Mostly clear, with a low around 45. South wind around 2 mph.

Thursday

High 74°F·Low 51°F

Sunny, with a high near 74. South wind 2 to 8 mph.

Thursday Night: Partly cloudy, with a low around 51. West wind 2 to 7 mph.

Friday

High 67°F·Low 38°F

Mostly sunny, with a high near 67.

Friday Night: Partly cloudy, with a low around 38.

Saturday

High 67°F·Low 45°F

Partly sunny, with a high near 67.

Saturday Night: Mostly cloudy, with a low around 45.

Sunday

High 70°F·Low 48°F

Mostly cloudy, with a high near 70.

Sunday Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.

Monday

High 68°F·Low 50°F

A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.

Tuesday

High 68°F

A chance of rain showers. Partly sunny, with a high near 68.

Nearby cities

Larger cities in the area

See every city we cover in Pennsylvania, or check all active alerts.

About this forecast

Forecast office
New Castle is served by the National Weather Service PBZ forecast office, forecast zone PAZ013, county zone PAC073.
Location used
The Census Bureau's internal point for New Castle (40.9956, -80.3458), in Lawrence County. Population: 21,332 (2024 estimate), number 27 of the 30 Pennsylvania cities on this site.
Radar
Nearest NWS radar: KPBZ. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/40.9956,-80.3458 (forecast issued Oct 28, 3:16 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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