Ottawa Airport (YOW):

Forecasts

Times in Eastern Daylight Time (EDT = GMT-4)
<-CTO Ottawa Airport <-CTO Home <-Units of Measure <-Browse logs, etc. <-Diagnostic Page
Current Weather Forecasts Warnings Temperatures BP+RH Winds Precip
Records Normals
Today Yesterday Tomorrow This Month Last Month Next Month This Year Last Year

   Current Official Forecast:

 [Source]

Forecasts issued Mon, October 6, 2025 at 15:44:

Summary:
Tuesday Wednesday Thursday Friday Saturday Sunday
 

 
 
 
 
 
 

 
Showers. Sunny. Sunny. Sunny. A mix of sun and cloud. Sunny.
POP 0% POP 0% POP 0% POP 0% POP 0% POP 0%
Precip: 10.0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm
Wind: SW @ 20 Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ -
Humidex: 27 Humidex: Humidex: Humidex: Humidex: Humidex:
Wind Chill: Wind Chill: Wind Chill: Wind Chill: Wind Chill: Wind Chill:
Visibility: Visibility: Visibility: Visibility: Visibility: Visibility:
       
Monday night Tuesday night Wednesday night Thursday night Friday night Saturday night  
 
 
 
 
 
 
Clear. Chance of showers. Clear. Clear. Cloudy periods. Clear.
POP 0% POP 40% POP 0% POP 0% POP 0% POP 0%  
Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm  
Wind: SW @ 20 Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ -  
Humidex: Humidex: Humidex: Humidex: Humidex: Humidex:  
Wind Chill: Wind Chill: Wind Chill: Wind Chill: Wind Chill: Wind Chill:  
Visibility: Visibility: Visibility: Visibility: Visibility: Visibility:  
       

Text Forecasts:
Monday night: Clear. Wind southwest 20 km/h gusting to 40 becoming light this evening. Low 17.
Tuesday: A few showers ending late in the afternoon then cloudy with 40 percent chance of showers. Risk of a thunderstorm late in the morning and in the afternoon. Amount 10 to 20 mm. Wind becoming southwest 20 km/h near noon. High 22 with temperature falling to 16 in the afternoon. Humidex 27. UV index 2 or low.
Tuesday night: Cloudy. 40 percent chance of showers early in the evening. Clearing after midnight. Low 6. POP 40%.
Wednesday: Sunny. High 15.
Wednesday night: Clear. Low plus 1.
Thursday: Sunny. High 13.
Thursday night: Clear. Low minus 1.
Friday: Sunny. High 16.
Friday night: Cloudy periods. Low 7.
Saturday: A mix of sun and cloud. High 18.
Saturday night: Clear. Low plus 5.
Sunday: Sunny. High 18.