Live Weather & Forecast

Weather in New Castle

Pennsylvania, United States · Real-time conditions & 3-day outlook

Flag of United States
Clear
16°C
Feels like 16°C
61°F / Feels 61°F
Clear
New Castle, Pennsylvania
🌙 Nighttime
Updated: 2026-04-18 05:45
💧
Humidity
70%
💨
Wind
13.7 km/h SE
🌬️
Wind Gust
28.7 km/h
🌡️
Pressure
1012 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
10.5°C
🌐
Wind Degree
142°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
191.9 μg/m³
NO₂
7.4 μg/m³
O₃
90 μg/m³
SO₂
7 μg/m³
PM 2.5
10.3 μg/m³
PM 10
10.7 μg/m³

Today's Hourly Forecast

24-hour breakdown for New Castle, Pennsylvania

12 AM
Clear
17°
Clear
💧 69% 💨 10.8 km/h
1 AM
Clear
17°
Clear
💧 69% 💨 10.4 km/h
2 AM
Clear
16°
Clear
💧 69% 💨 11.2 km/h
3 AM
Clear
16°
Clear
💧 73% 💨 11.2 km/h
4 AM
Clear
16°
Clear
💧 70% 💨 11.9 km/h
5 AM
Clear
16°
Clear
💧 70% 💨 13.7 km/h
6 AM
Clear
15°
Clear
💧 73% 💨 14.8 km/h
7 AM
Sunny
16°
Sunny
💧 73% 💨 15.1 km/h
8 AM
Sunny
17°
Sunny
💧 71% 💨 19.8 km/h
9 AM
Sunny
19°
Sunny
💧 66% 💨 21.6 km/h
10 AM
Sunny
22°
Sunny
💧 57% 💨 23.8 km/h
11 AM
Sunny
25°
Sunny
💧 46% 💨 25.2 km/h
12 PM
Sunny
26°
Sunny
💧 41% 💨 26.6 km/h
1 PM
Partly Cloudy
28°
Partly Cloudy
💧 42% 💨 25.2 km/h
2 PM
Sunny
28°
Sunny
💧 44% 💨 23 km/h
3 PM
Partly Cloudy
26°
Partly Cloudy
💧 41% 💨 24.1 km/h
4 PM
Patchy rain nearby
23°
Patchy rain nearby
💧 86% 💨 22.7 km/h 🌧️ 100%
5 PM
Moderate rain at times
21°
Moderate rain at times
💧 87% 💨 16.6 km/h 🌧️ 100%
6 PM
Light rain
17°
Light rain
💧 89% 💨 11.2 km/h 🌧️ 100%
7 PM
Moderate or heavy rain shower
14°
Moderate or heavy rain shower
💧 96% 💨 24.1 km/h 🌧️ 100%
8 PM
Heavy rain
12°
Heavy rain
💧 96% 💨 22 km/h 🌧️ 100%
9 PM
Light drizzle
10°
Light drizzle
💧 94% 💨 20.9 km/h 🌧️ 100%
10 PM
Light rain
Light rain
💧 93% 💨 20.9 km/h 🌧️ 100%
11 PM
Light drizzle
Light drizzle
💧 92% 💨 18.7 km/h 🌧️ 100%

3-Day Forecast

Daily overview for New Castle, Pennsylvania

Today
Heavy rain
Heavy rain
30° /
🌧️ 91% chance of rain
💧 Avg. humidity: 71%
💨 Max wind: 26.6 km/h
🌧️ Total precip: 31.73 mm
☀️ UV Index: 1
🌅 Sunrise: 06:37 AM
🌇 Sunset: 08:04 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Patchy rain nearby
Patchy rain nearby
10° /
🌧️ 90% chance of rain
💧 Avg. humidity: 65%
💨 Max wind: 30.6 km/h
🌧️ Total precip: 2.46 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:36 AM
🌇 Sunset: 08:05 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Mon, Apr 20
Patchy rain nearby
Patchy rain nearby
/ -2°
🌧️ 85% chance of rain
💧 Avg. humidity: 66%
💨 Max wind: 22 km/h
🌧️ Total precip: 1.67 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:34 AM
🌇 Sunset: 08:06 PM
🌙 Waxing Crescent
🌑 Moon: 9% lit

Best Time to Visit New Castle

Plan your trip to New Castle, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to New Castle 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in New Castle?
Current conditions in New Castle: Clear, temperature 16°C, humidity 70%.
What is the best time to visit New Castle?
The best time to visit New Castle is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in New Castle?
New Castle is located at approximately 41° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in New Castle?
The wettest period in New Castle is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to New Castle?
For visits to New Castle during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is New Castle in?
New Castle is located in United States, in the state of Pennsylvania.
What are the public holidays in New Castle in 2026?
View the 2026 public holidays for New Castle on our Holidays page.
What are the GPS coordinates used for the weather forecast in New Castle?
The weather forecast for New Castle uses coordinates 40.9999, -80.3472.