Live Weather & Forecast
Weather in New Castle
Pennsylvania, United States · Real-time conditions & 3-day outlook
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
17°
Clear
1 AM
17°
Clear
2 AM
16°
Clear
3 AM
16°
Clear
4 AM
16°
Clear
5 AM
16°
Clear
6 AM
15°
Clear
7 AM
16°
Sunny
8 AM
17°
Sunny
9 AM
19°
Sunny
10 AM
22°
Sunny
11 AM
25°
Sunny
12 PM
26°
Sunny
1 PM
28°
Partly Cloudy
2 PM
28°
Sunny
3 PM
26°
Partly Cloudy
4 PM
23°
Patchy rain nearby
5 PM
21°
Moderate rain at times
6 PM
17°
Light rain
7 PM
14°
Moderate or heavy rain shower
8 PM
12°
Heavy rain
9 PM
10°
Light drizzle
10 PM
9°
Light rain
11 PM
9°
Light drizzle
3-Day Forecast
Daily overview for New Castle, Pennsylvania
Today
Heavy rain
30°
/
8°
🌧️ 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
10°
/
3°
🌧️ 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
8°
/
-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.
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.