Live Weather & Forecast

Weather in New Castle

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

Flag of United States
Clear
15°C
Feels like 15°C
60°F / Feels 60°F
Clear
New Castle, Colorado
🌙 Nighttime
Updated: 2026-04-13 03:00
💧
Humidity
19%
💨
Wind
12.6 km/h SW
🌬️
Wind Gust
26.2 km/h
🌡️
Pressure
1012 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
25%
💦
Dew Point
-1.7°C
🌐
Wind Degree
218°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
135.9 μg/m³
NO₂
1.9 μg/m³
O₃
100 μg/m³
SO₂
1.2 μg/m³
PM 2.5
3.5 μg/m³
PM 10
12.9 μg/m³

Today's Hourly Forecast

24-hour breakdown for New Castle, Colorado

12 AM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 87% 💨 17.3 km/h
1 AM
Cloudy
Cloudy
💧 86% 💨 17.6 km/h
2 AM
Cloudy
Cloudy
💧 89% 💨 15.5 km/h
3 AM
Clear
15°
Clear
💧 19% 💨 12.6 km/h
4 AM
Clear
-1°
Clear
💧 86% 💨 9.4 km/h
5 AM
Clear
-2°
Clear
💧 86% 💨 9.4 km/h
6 AM
Clear
-1°
Clear
💧 86% 💨 10.1 km/h
7 AM
Sunny
Sunny
💧 58% 💨 7.6 km/h
8 AM
Sunny
Sunny
💧 46% 💨 10.1 km/h
9 AM
Sunny
Sunny
💧 42% 💨 13 km/h
10 AM
Sunny
10°
Sunny
💧 35% 💨 13 km/h
11 AM
Sunny
11°
Sunny
💧 34% 💨 15.5 km/h
12 PM
Sunny
13°
Sunny
💧 30% 💨 18 km/h
1 PM
Partly Cloudy
13°
Partly Cloudy
💧 32% 💨 19.1 km/h
2 PM
Sunny
13°
Sunny
💧 34% 💨 20.2 km/h
3 PM
Sunny
14°
Sunny
💧 30% 💨 20.2 km/h
4 PM
Sunny
13°
Sunny
💧 36% 💨 17.3 km/h
5 PM
Partly Cloudy
12°
Partly Cloudy
💧 36% 💨 15.8 km/h
6 PM
Sunny
12°
Sunny
💧 38% 💨 13.3 km/h
7 PM
Partly Cloudy
10°
Partly Cloudy
💧 41% 💨 9 km/h
8 PM
Overcast
Overcast
💧 44% 💨 7.9 km/h
9 PM
Overcast
Overcast
💧 57% 💨 4 km/h
10 PM
Partly Cloudy
Partly Cloudy
💧 56% 💨 4.3 km/h
11 PM
Overcast
Overcast
💧 56% 💨 3.6 km/h

3-Day Forecast

Daily overview for New Castle, Colorado

Today
Partly Cloudy
Partly Cloudy
14° / -2°
🌧️ 0% chance of rain
💧 Avg. humidity: 55%
💨 Max wind: 20.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:36 AM
🌇 Sunset: 07:47 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Heavy rain
Heavy rain
/ -2°
🌧️ 89% chance of rain
❄️ 24% chance of snow
💧 Avg. humidity: 86%
💨 Max wind: 10.4 km/h
🌧️ Total precip: 34.67 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:35 AM
🌇 Sunset: 07:48 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Sunny
Sunny
15° / -7°
🌧️ 0% chance of rain
💧 Avg. humidity: 56%
💨 Max wind: 15.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:33 AM
🌇 Sunset: 07:49 PM
🌙 Waning Crescent
🌑 Moon: 8% 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 15°C, humidity 19%.
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 39.6° 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 Colorado.
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 39.5715, -107.535.