Live Weather & Forecast
Weather in Newcastle
Ontario, Canada · Real-time conditions & 3-day outlook
10°C
Feels like 8°C
50°F / Feels 47°F
Partly cloudy
Newcastle, Ontario
🌞 Daytime
Updated: 2026-04-24 17:15
Humidity
34%
Wind
15.5 km/h ESE
Wind Gust
22 km/h
Pressure
1012 mb
Visibility
14 km
UV Index
0.6
(Low)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
2.7°C
Wind Degree
117°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
225.9 μg/m³
NO₂
5.8 μg/m³
O₃
85 μg/m³
SO₂
1.7 μg/m³
PM 2.5
2.7 μg/m³
PM 10
2.9 μg/m³
Today's Hourly Forecast
24-hour breakdown for Newcastle, Ontario
12 AM
10°
Clear
1 AM
9°
Clear
2 AM
8°
Clear
3 AM
7°
Clear
4 AM
6°
Clear
5 AM
6°
Clear
6 AM
6°
Clear
7 AM
6°
Sunny
8 AM
6°
Sunny
9 AM
6°
Sunny
10 AM
8°
Sunny
11 AM
8°
Sunny
12 PM
9°
Sunny
1 PM
9°
Sunny
2 PM
10°
Sunny
3 PM
12°
Sunny
4 PM
12°
Sunny
5 PM
10°
Partly cloudy
6 PM
12°
Sunny
7 PM
9°
Sunny
8 PM
8°
Sunny
9 PM
7°
Clear
10 PM
6°
Clear
11 PM
6°
Clear
3-Day Forecast
Daily overview for Newcastle, Ontario
Today
Sunny
13°
/
5°
🌧️ 0% chance of rain
💧 Avg. humidity: 58%
💨 Max wind: 21.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.4
🌅 Sunrise: 06:17 AM
🌇 Sunset: 08:10 PM
🌙 First Quarter
🌑 Moon: 49% lit
Sat, Apr 25
Moderate rain
7°
/
4°
🌧️ 92% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 35.6 km/h
🌧️ Total precip: 19.27 mm
☀️ UV Index: 0.7
🌅 Sunrise: 06:16 AM
🌇 Sunset: 08:11 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Sunny
11°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 13 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 6.3
🌅 Sunrise: 06:14 AM
🌇 Sunset: 08:12 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Best Time to Visit Newcastle
Plan your trip to Newcastle, Canada 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 Newcastle?
Current conditions in Newcastle: Partly cloudy, temperature 10°C, humidity 34%.
What is the best time to visit Newcastle?
The best time to visit Newcastle is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Newcastle?
Newcastle is located at approximately 43.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Newcastle?
The wettest period in Newcastle is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Newcastle?
For visits to Newcastle during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Newcastle in 2026?
View the 2026 public holidays for Newcastle on our Holidays page.
What are the GPS coordinates used for the weather forecast in Newcastle?
The weather forecast for Newcastle uses coordinates 43.9175, -78.5888.
What is the current temperature outside in Newcastle?
The current outdoor temperature in Newcastle is 10°C (50°F) with partly cloudy.
What is the hourly weather forecast for Newcastle today?
Today's hour-by-hour weather breakdown for Newcastle is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Newcastle tomorrow hour by hour?
Tomorrow's forecast for Newcastle shows a high of 7°C and a low of 4°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Newcastle?
Rain is not expected in Newcastle today. Current forecast shows no significant rain probability.
Is it going to rain today in Newcastle?
No, rain is not forecast for Newcastle today. Current conditions show clear to partly cloudy skies.