Centretown Observatory:

Current Weather

Times in Eastern Standard Time (EST = GMT-5)

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   Latest Observations from CTO Weather Centre - Monday, November 17, 2025 at 08:04 EST
   Local Sky: Cloudy
   Airport: Mostly Cloudy

 

Centretown   

Airport   

   Temperature:

   Humidex:

   

   Wind Chill Index:

   

   Relative Humidity:

83

%

80 %

   Dew Point:

   Precipitation Today:

   

   Sunshine Today:

00:30

     
 

Centretown   

Airport   

   Barometric Pressure:

 

   - Trend:

Rising

  Rising    

   Winds:

ESE at

WNW at  

   - Bearing (approx.):

113 ° 293 °  

   - Recent Gust:

     km/h  

   Visibility:

     

   Capture Accuracy:

333/333 (100.00%)  

   Webcams and Radar:

CTO Webcam:

Parliament Hill Webcam:

EC Local Radar:

EC National Radar:

About... Parliament Hill Webcam

   Current Official Forecast:

[Source]

Forecasts issued Mon, November 17, 2025 at 05:00:

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
POP 40% POP 0% POP 0% POP 0% POP 40% POP 60% POP 0%
Monday night Tuesday night Wednesday night Thursday night Friday night Saturday night  
 
 
 
POP 0% POP 0% POP 0% POP 0% POP 60% POP 0%  
Monday: Periods of light snow ending early this morning then cloudy with 40 percent chance of flurries. Wind northwest 20 km/h gusting to 40. High plus 1. Wind chill minus 9 this morning. UV index 1 or low. POP 40%.
Monday night: Cloudy. Wind northwest 20 km/h becoming light this evening. Low minus 3. Wind chill near minus 7.
Tuesday: Cloudy. Wind up to 15 km/h. High plus 1. Wind chill minus 7 in the morning. UV index 1 or low.
Tuesday night: Clearing. Low minus 4.
Wednesday: Sunny. High plus 1.
Wednesday night: Cloudy periods. Low minus 4.
Thursday: Cloudy. High plus 2.
Thursday night: Cloudy. Low zero.
Friday: Cloudy with 40 percent chance of showers. High 6. POP 40%.
Friday night: Cloudy with 60 percent chance of showers. Low plus 1. POP 60%.
Saturday: Cloudy with 60 percent chance of showers. High plus 3. POP 60%.
Saturday night: Cloudy periods. Low minus 2.
Sunday: A mix of sun and cloud. High plus 3.
 

   Regional Watches and Warnings:

Current Satellite Imagery:

S. and E. Ontario:
Click for source page

Marine - Great Lakes:
Click for source page

Visible:
Click for EC website

Infrared:
Click for EC website

 
   Today: 09:26 of daylight    Yesterday: 09:29 of daylight
 

Centretown

Airport

   Sunrise:

    07:05     07:04

   Sunset:

    16:31     16:31
 

   Normal High:

   

   Normal Low:

   

   Record High:

(2022) (1942)

   Record Low:

(2019) (1980)
 
   

Centretown

 

Airport

   Sunrise:

    07:03     07:03

   Sunset:

    16:32     16:32
 

   High:

(11:04) (13:00)

   Low:

(23:39) (22:20)

   Precip:

   

   Sunshine:

01:50          
  

   Current and Upcoming Events (next 7 days: 3):

 
   
New Moon - Wed, November 19 @ 15:47 (-2d, 7h, 42m)
The Moon is nearest the Sun in the sky and cannot be seen from the ground.
   
Edwin Hubble Born - Thu, November 20 @ 00:00 (-2d, 15h, 55m)
On this day in 1889 (136 years ago), astronomer Edwin Hubble was born. Later in life, with the help of the Hale Telescope, he determined that the universe was expanding.
   
ISS Launched - Thu, November 20 @ 00:00 (-2d, 15h, 55m)
On this day in 1998, the first module of the International Space Station was launched. The station, involving astronauts from North America, Europe, Japan, and other countries, continues to operate, in Low Earth Orbit (LEO), 27 years later.
   - times in EST or EDT according to date of event
  

   Recent Events (Reverse Order; Last 7 days: 5):

 
   
Tycho's Supernova - Sat, November 15 @ 00:00 (+2d, 8h, 5m)
In mid-November 1572, Tycho Brahe spied a supernova in Cassiopeia, now designated SN1572. More than 450 years later, its remnant, 3C 10 (also known as "Tycho's Supernova Remnant, G120.7+2.1, or Cepheus X-1), is easily spotted in mid-sized amateur telescopes and is the subject of intense study.
   
West Coast Weather Bomb - Fri, November 14 @ 00:00 (+3d, 8h, 5m)
A surprise weather bomb delivered hurricane-force winds to a large area of the Pacific Northwest, including coastal British Columbia, on this day in 1981. The author was trapped on a campground for two days, as a result of this storm, due to a large number of felled trees blocking the road.
   
Last Quarter - Tue, November 11 @ 15:28 (+5d, 16h, 37m)
A waning half-Moon is near the meridian (halfway across the sky) as the Sun rises.
   
Remembrance Day - Tue, November 11 @ 00:00 (+6d, 8h, 5m)
Today is the day we wear a poppy, and maintain one minute of silence at 11am, in honour of the soldiers who have fought for our freedom, many of them dying in foreign lands. It is now 107 years after the "Great War," as World War I was often known, the centennial having come in 2018.
   
Wreck of the Edmund Fitzerald - Mon, November 10 @ 00:00 (+7d, 8h, 5m)
The ship made famous in the Gordon Lightfoot song sank in heavy seas on Lake Superior, on this day in 1975, 50 years ago. Speculation continues as to the actual cause of the sinking, the wreck having been located four days later. Her entire crew of 29 was lost.
   - times in EST or EDT according to date of event
  

   Current Terminator:

Tropical Weather Synopses:

Americas:
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Space Weather Dashboard:

Tropical Weather (NOAA):
Click for NHC website

Canadian Hurricane Centre:
Click for CHC website

Regional Temperatures (Cities Clickable):

National Temperatures (Cities Clickable):


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