Ottawa/Macdonald-Cartier International Airport (YOW) 15 Day Weather Forecast, Ottawa Canada
Current weather conditions and 15 day weather forecast for Ottawa/Macdonald-Cartier International Airport in Ottawa, Canada including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at YOW
| 21 December 2025 Sun -0.9 ° C ( 30.4°F )  Light snow |
Feels Like : -6 ° C / 21.2°F Humidity : % 86 Pressure : 1003 mb Wind Speed : 17.6 kmph / 11 miles from SSW 
Visibility : 4.8 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15-day weather forecast for Ottawa/Macdonald-Cartier International Airport, Ottawa, Canada
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 20 December 2025 Sat |  Patchy moderate snow |
-10 ° C | -3.2 ° C | -6.5 ° C | % 77 | 33.5 km/h | 67% |
| 21 December 2025 Sun |  Light freezing rain |
-9.4 ° C | -2.6 ° C | -3.9 ° C | % 68 | 34.9 km/h | 85% |
| 22 December 2025 Mon |  Cloudy |
-10.1 ° C | -2.7 ° C | -6.4 ° C | % 78 | 18 km/h | 0% |
| 23 December 2025 Tue |  Moderate snow |
-5.2 ° C | 0.7 ° C | -1.1 ° C | % 96 | 17.6 km/h | 73% |
| 24 December 2025 Wed |  Mist |
-7.4 ° C | -0.7 ° C | -3.9 ° C | % 91 | 11.5 km/h | 82% |
| 25 December 2025 Thu |  Freezing fog |
-2 ° C | 0.3 ° C | -1.2 ° C | % 96 | 11.5 km/h | 79% |
| 26 December 2025 Fri | Freezing fog |
-11.6 ° C | -0 ° C | -3.1 ° C | % 91 | 33.5 km/h | 67% |
| 27 December 2025 Sat |  Sunny |
-16.9 ° C | -13.4 ° C | -14.9 ° C | % 71 | 21.2 km/h | 0% |
| 28 December 2025 Sun |  Partly Cloudy |
-15.4 ° C | -8.3 ° C | -11.7 ° C | % 77 | 10.8 km/h | 0% |
| 29 December 2025 Mon |  Moderate or heavy snow showers |
-8.8 ° C | -3 ° C | -5.5 ° C | % 93 | 19.1 km/h | 87% |
| 30 December 2025 Tue |  Heavy snow |
-5.3 ° C | 0.2 ° C | -2 ° C | % 93 | 17.3 km/h | 83% |
| 31 December 2025 Wed | Mist |
-12.9 ° C | -3.7 ° C | -9 ° C | % 95 | 8.3 km/h | 0% |
| 01 January 2026 Thu | Freezing fog |
-12.6 ° C | -1.8 ° C | -7.4 ° C | % 97 | 6.5 km/h | 0% |
| 02 January 2026 Fri | Mist |
-8.7 ° C | -1.9 ° C | -5.3 ° C | % 94 | 19.8 km/h | 0% |
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