St. Catharines Airport (YCM) 15 Day Weather Forecast, Saint Catharines Canada
Current weather conditions and 15 day weather forecast for St. Catharines Airport in Saint Catharines, 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 YCM
| 16 December 2025 Tue -6.6 ° C ( 20.1°F )  Clear |
Feels Like : -13.3 ° C / 8°F Humidity : % 69 Pressure : 1020 mb Wind Speed : 18.7 kmph / 11.6 miles from WSW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for St. Catharines Airport, Saint Catharines, Canada
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 16 December 2025 Tue | Sunny |
-9.7 ° C | 1.1 ° C | -4.4 ° C | % 74 | 43.2 km/h | 0% |
| 17 December 2025 Wed |  Overcast |
-0.1 ° C | 4.8 ° C | 2.2 ° C | % 89 | 49 km/h | 0% |
| 18 December 2025 Thu |  Patchy rain nearby |
0.1 ° C | 4.9 ° C | 2.6 ° C | % 91 | 47.5 km/h | 75% |
| 19 December 2025 Fri |  Blowing snow |
-5.8 ° C | 2.6 ° C | -0.7 ° C | % 72 | 52.2 km/h | 88% |
| 20 December 2025 Sat |  Partly Cloudy |
-5.6 ° C | 3 ° C | -2.2 ° C | % 60 | 41 km/h | 0% |
| 21 December 2025 Sun | Patchy rain nearby |
0.8 ° C | 3.1 ° C | 2.4 ° C | % 78 | 36 km/h | 89% |
| 22 December 2025 Mon | Partly Cloudy |
-4.3 ° C | -3.2 ° C | -3.1 ° C | % 61 | 38.2 km/h | 0% |
| 23 December 2025 Tue | Patchy rain nearby |
-3.3 ° C | 4.4 ° C | 1.4 ° C | % 80 | 32 km/h | 88% |
| 24 December 2025 Wed | Partly Cloudy |
-0.1 ° C | 2.1 ° C | 1.4 ° C | % 68 | 32 km/h | 0% |
| 25 December 2025 Thu | Patchy rain nearby |
-0.5 ° C | 2.5 ° C | 1.1 ° C | % 71 | 17.6 km/h | 65% |
| 26 December 2025 Fri | Patchy rain nearby |
1.5 ° C | 11.5 ° C | 7.5 ° C | % 92 | 35.6 km/h | 81% |
| 27 December 2025 Sat | Overcast |
-2 ° C | -1.6 ° C | -1.5 ° C | % 70 | 27.4 km/h | 0% |
| 28 December 2025 Sun |  Patchy moderate snow |
-2.7 ° C | 1.2 ° C | -1.4 ° C | % 74 | 28.4 km/h | 84% |
| 29 December 2025 Mon | Overcast |
-3.4 ° C | -1.5 ° C | -2.5 ° C | % 82 | 11.2 km/h | 0% |
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