Ottawa Airport (YOW):

Forecasts

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   Current Official Forecast:

 [Source]

Forecasts issued Fri, July 25, 2025 at 15:30:

Summary:
Saturday Sunday Monday Tuesday Wednesday Thursday
 

 
 
 
 
 
 

 
A mix of sun and cloud. Chance of showers. Sunny. Chance of showers. Chance of showers. Sunny.
POP 0% POP 40% POP 0% POP 40% POP 40% POP 0%
Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm
Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ - Wind: - @ -
Humidex: 35 Humidex: Humidex: Humidex: Humidex: Humidex:
Wind Chill: Wind Chill: Wind Chill: Wind Chill: Wind Chill: Wind Chill:
Visibility: Visibility: Visibility: Visibility: Visibility: Visibility:
       
Friday night Saturday night Sunday night Monday night Tuesday night Wednesday night  
 
 
 
 
 
 
A few clouds. Chance of showers. Clear. Chance of showers. Chance of showers. Chance of showers.
POP 0% POP 30% POP 0% POP 40% POP 40% POP 30%  
Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm Precip: 0 mm  
Wind: N @ 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:
Friday night: Partly cloudy. Becoming clear this evening. Wind north 20 km/h becoming light early this evening. Low 16.
Saturday: A mix of sun and cloud. High 30. Humidex 35. UV index 9 or very high.
Saturday night: Clear. Increasing cloudiness near midnight then 30 percent chance of showers overnight. Low 18. POP 30%.
Sunday: A mix of sun and cloud with 40 percent chance of showers. High 31. POP 40%.
Sunday night: Clear. Low 21.
Monday: Sunny. High 32.
Monday night: Cloudy periods with 40 percent chance of showers. Low 20. POP 40%.
Tuesday: A mix of sun and cloud with 40 percent chance of showers. High 30. POP 40%.
Tuesday night: Cloudy periods with 40 percent chance of showers. Low 17. POP 40%.
Wednesday: A mix of sun and cloud with 40 percent chance of showers. High 25. POP 40%.
Wednesday night: Cloudy periods with 30 percent chance of showers. Low 13. POP 30%.
Thursday: Sunny. High 26.