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November 18th, 2025 :: 6:05 am EST   

Local Weather Report for
Newcastle
Ontario, Canada

 Newcastle Weather Forecast Summary  
 
Today
Nov 18th
Wednesday
Nov 19th
Thursday
Nov 20th
Friday
Nov 21st
Saturday
Nov 22nd
Cloudy Cloudy Cloudy Cloudy Cloudy
4°C
4°C
-3°C
5°C
-1°C
8°C
1°C
6°C
0°C
 
 Newcastle Detailed Weather Forecast  
 
Tuesday, November 18th, 2025
Morning Temperature: 3°C
Cloudy.
Afternoon Temperature: 0°C
Cloudy.
Evening Temperature: -2°C
Mostly clear.
Wednesday, November 19th, 2025
Overnight Temperature: -3°C
Clear.
Morning Temperature: 3°C
Sunny.
Afternoon Temperature: 1°C
Cloudy.
Evening Temperature: -1°C
Cloudy.
Thursday, November 20th, 2025
Overnight Temperature: -1°C
Cloudy.
Morning Temperature: 4°C
Cloudy.
Afternoon Temperature: 1°C
A mix of sun and cloud.
Evening Temperature: 2°C
Cloudy.
Friday, November 21st, 2025
Overnight Temperature: 5°C
Cloudy.
Morning Temperature: 7°C
Cloudy with a chance of showers.
Afternoon Temperature: 5°C
Sunny. Windy at times.
Evening Temperature: 1°C
Clear.
Saturday, November 22nd, 2025
Overnight Temperature: 1°C
Clear with cloudy periods.
Morning Temperature: 5°C
Sunny.
Afternoon Temperature: 3°C
Sunny.
Evening Temperature: 0°C
Cloudy.
Sunday, November 23rd, 2025
Overnight Temperature: 0°C
Cloudy.
Morning Temperature: 5°C
Cloudy. Windy at times.
Afternoon Temperature: 5°C
A mix of cloud and sun. Windy at times.
Evening Temperature: 2°C
Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Windy at times.
Monday, November 24th, 2025
Overnight Temperature: 1°C
Clear with cloudy periods. Windy at times.
Morning Temperature: 3°C
Sunny. Windy at times.
Afternoon Temperature: 2°C
Cloudy. Windy at times.
Evening Temperature: 0°C
Mostly clear.
Tuesday, November 25th, 2025
Overnight Temperature: 0°C
Cloudy.
Morning Temperature: 5°C
Cloudy.
Afternoon Temperature: 3°C
Cloudy.
Evening Temperature: 3°C
Cloudy.
Wednesday, November 26th, 2025
Overnight Temperature: 3°C
Cloudy.
Morning Temperature: 6°C
A mix of cloud and sun.
Afternoon Temperature: 6°C
Cloudy.
Evening Temperature: 5°C
Cloudy.





 

  [ Local Weather Report ]
Bowmanville, ON 
5:00 AM  0°C
Overcast
 
Port Darlington, ON 
5:00 AM  0°C
Overcast
 
Clarington, ON 
5:00 AM  0°C
Overcast
 
Salem, ON 
5:00 AM  0°C
Overcast
 
Tyrone, ON 
5:00 AM  0°C
Overcast
 
Decker Hollow, ON 
 
Pontypool, ON 
 
Burketon Station, ON 
5:00 AM  0°C
Overcast
 
Oshawa, ON 
5:00 AM  0°C
Overcast
 
Port Hope, ON 
5:00 AM  -1°C
 

 
This WeatherCity Weather Forecast for Newcastle, Ontario, Canada is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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