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
| 13 September 2026 Sun 20.3 ° C ( 68.5°F )  Overcast |
Feels Like : 20.3 ° C / 68.5°F Humidity : % 90 Pressure : 1010 mb Wind Speed : 15.8 kmph / 9.8 miles from SW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
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 |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun | Overcast |
16.9 ° C | 23.7 ° C | 20.6 ° C | % 77 | 41.8 km/h | 25% |
| 14 September 2026 Mon |  Sunny |
14.5 ° C | 17.4 ° C | 15.9 ° C | % 59 | 28.1 km/h | 17% |
| 15 September 2026 Tue | Overcast |
15.1 ° C | 21.2 ° C | 18.3 ° C | % 62 | 27 km/h | 16% |
| 16 September 2026 Wed |  Patchy rain nearby |
18.6 ° C | 21.1 ° C | 19.9 ° C | % 81 | 23 km/h | 78% |
| 17 September 2026 Thu |  Light rain shower |
16.9 ° C | 21.1 ° C | 19.1 ° C | % 93 | 31 km/h | 92% |
| 18 September 2026 Fri | Overcast |
15.7 ° C | 19.9 ° C | 16.9 ° C | % 74 | 32.4 km/h | 71% |
| 19 September 2026 Sat | Sunny |
13.9 ° C | 16.1 ° C | 14.7 ° C | % 67 | 32.4 km/h | 9% |
| 20 September 2026 Sun | Sunny |
13.7 ° C | 17.8 ° C | 15.5 ° C | % 57 | 15.1 km/h | 3% |
| 21 September 2026 Mon | Sunny |
13.7 ° C | 17.2 ° C | 15.7 ° C | % 69 | 31.3 km/h | 6% |
| 22 September 2026 Tue | Sunny |
14.8 ° C | 18.5 ° C | 16.6 ° C | % 63 | 25.9 km/h | 4% |
| 23 September 2026 Wed | Sunny |
13.2 ° C | 17.8 ° C | 15.7 ° C | % 68 | 25.9 km/h | 5% |
| 24 September 2026 Thu | Sunny |
13.8 ° C | 17.4 ° C | 15.8 ° C | % 61 | 15.1 km/h | 4% |
| 25 September 2026 Fri | Sunny |
16.2 ° C | 19 ° C | 17.4 ° C | % 58 | 40.7 km/h | 36% |
| 26 September 2026 Sat | Sunny |
11.5 ° C | 19 ° C | 15.1 ° C | % 62 | 42.5 km/h | 37% |
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