Currently: 19 °F. Passing clouds. (Weather station: Saint Catharines Airport, Canada). See more current weatherSt. Catharines Extended Forecast with high and low temperatures
2 Week Extended Forecast in St. Catharines, Ontario, Canada
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Tue Dec 9 |  | 33 / 14 °F | Light snow late. Overcast. | 18 °F | 22 mph | ↑ | 73% | 67% | 0.69" | 0 (Low) | 7:37 am | 4:41 pm |
| Wed Dec 10 |  | 40 / 28 °F | Rain. Overcast. | 31 °F | 16 mph | ↑ | 85% | 82% | 2.18" | 0 (Low) | 7:38 am | 4:41 pm |
| Thu Dec 11 | | 32 / 26 °F | Light snow. Cloudy. | 20 °F | 16 mph | ↑ | 67% | 44% | 0.80" | 0 (Low) | 7:38 am | 4:41 pm |
| Fri Dec 12 |  | 34 / 26 °F | Broken clouds. | 22 °F | 14 mph | ↑ | 73% | 40% | 0.20" | 0 (Low) | 7:39 am | 4:41 pm |
| Sat Dec 13 | | 33 / 25 °F | Light snow. Overcast. | 16 °F | 18 mph | ↑ | 72% | 45% | 0.49" | 0 (Low) | 7:40 am | 4:41 pm |
| Sun Dec 14 |  | 26 / 15 °F | Overcast. | 13 °F | 12 mph | ↑ | 71% | 3% | 0.00" | 0 (Low) | 7:41 am | 4:42 pm |
| Mon Dec 15 | | 25 / 13 °F | Light snow late. Overcast. | 14 °F | 10 mph | ↑ | 73% | 18% | 0.11" | 0 (Low) | 7:42 am | 4:42 pm |
| Tue Dec 16 | | 29 / 17 °F | Light snow late. Cloudy. | 14 °F | 13 mph | ↑ | 75% | 47% | 0.06" | 0 (Low) | 7:42 am | 4:42 pm |
| Wed Dec 17 |  | 36 / 28 °F | Snow changing to rain. Afternoon clouds. | 24 °F | 26 mph | ↑ | 73% | 54% | 0.19" | 0 (Low) | 7:43 am | 4:43 pm |
| Thu Dec 18 |  | 37 / 36 °F | Sprinkles. Broken clouds. | 29 °F | 14 mph | ↑ | 67% | 53% | 0.11" | 0 (Low) | 7:44 am | 4:43 pm |
| Fri Dec 19 | | 36 / 28 °F | Light snow. Cloudy. | 18 °F | 15 mph | ↑ | 67% | 51% | 0.85" | 0 (Low) | 7:44 am | 4:43 pm |
| Sat Dec 20 |  | 30 / 24 °F | Snow. Cloudy. | 19 °F | 14 mph | ↑ | 87% | 69% | 3.76" | 0 (Low) | 7:45 am | 4:44 pm |
| Sun Dec 21 | | 30 / 22 °F | Broken clouds. | 24 °F | 6 mph | ↑ | 71% | 44% | 0.17" | 0 (Low) | 7:45 am | 4:44 pm |
| Mon Dec 22 | | 29 / 22 °F | An icy mix changing to rain. Overcast. | 11 °F | 20 mph | ↑ | 90% | 47% | 0.39" | 0 (Low) | 7:46 am | 4:45 pm |
| Tue Dec 23 | | 40 / 26 °F | Overcast. | 37 °F | 5 mph | ↑ | 93% | 6% | 0.00" | 0 (Low) | 7:46 am | 4:45 pm |
| * Updated Tuesday, December 9, 2025 4:23:58 am St. Catharines time - Weather by CustomWeather, © 2025 | ||||||||||||