 |
 Current St Catharines Weather Conditions |
Updated December 18th at 10:00 am |
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| Mostly Cloudy |
| Temperature: | 6°C |
Dew Point: | -1°C |
| Barometer: | 101.3 kPa |
Wind: | N 38 Km/h |
| Humidity: | 60.7% |
Visibility: | 0 Km |
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| St Catharines Weather Forecast Summary |
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Today
Dec 18th
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Friday
Dec 19th
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Saturday
Dec 20th
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Sunday
Dec 21st
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Monday
Dec 22nd
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Cloudy |
Mix of rain and snow |
Cloudy |
Cloudy |
Cloudy |
10°C
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7°C
-4°C |
5°C
-3°C |
1°C
-4°C |
0°C
-6°C |
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| St Catharines Detailed Weather Forecast |
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| Thursday, December 18th, 2025 |
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Afternoon |
Temperature: 7°C |
| Cloudy. Windy. |
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Evening |
Temperature: 10°C |
| Cloudy with a chance of showers. Windy. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 5°C |
| Cloudy with a few showers. Showers possibly mixed with wet flurries. Windy. |
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Morning |
Temperature: -1°C |
| Cloudy with a chance of flurries or showers. Windy. |
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Afternoon |
Temperature: -3°C |
| Cloudy. Windy. |
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Evening |
Temperature: -3°C |
| Cloudy with a slight chance of flurries. Windy. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: -3°C |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: -1°C |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 4°C |
| Cloudy with a slight chance of showers. Showers possibly mixed with wet flurries. Windy. |
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Evening |
Temperature: 3°C |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Windy. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 0°C |
| A mix of cloudy and clear skies. Windy. |
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Morning |
Temperature: -3°C |
| Cloudy with a chance of flurries. Windy. |
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Afternoon |
Temperature: -4°C |
| A mix of cloud and sun. Windy. |
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Evening |
Temperature: -4°C |
| Cloudy with a chance of flurries. Windy at times. |
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| Monday, December 22nd, 2025 |
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Overnight |
Temperature: -5°C |
| Clear with cloudy periods. |
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Morning |
Temperature: -3°C |
| Cloudy. |
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Afternoon |
Temperature: -1°C |
| Cloudy. |
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Evening |
Temperature: 0°C |
| Cloudy. |
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| Tuesday, December 23rd, 2025 |
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Overnight |
Temperature: 2°C |
| Cloudy. Windy. |
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Morning |
Temperature: 4°C |
| Cloudy. Windy. |
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Afternoon |
Temperature: 2°C |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 1°C |
| Cloudy. |
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| Wednesday, December 24th, 2025 |
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Overnight |
Temperature: -1°C |
| Cloudy. |
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Morning |
Temperature: -1°C |
| A mix of sun and cloud. |
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Afternoon |
Temperature: 0°C |
| Cloudy. |
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Evening |
Temperature: 2°C |
| Cloudy. |
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| Thursday, December 25th, 2025 |
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Overnight |
Temperature: 2°C |
| Cloudy with showers likely. Showers possibly mixed with wet flurries. |
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Morning |
Temperature: 2°C |
| Cloudy with a chance of flurries or showers. Risk of freezing rain. |
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Afternoon |
Temperature: 1°C |
| Cloudy. |
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Evening |
Temperature: 0°C |
| Cloudy. Windy at times. |
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| Friday, December 26th, 2025 |
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Overnight |
Temperature: 0°C |
| Cloudy with a chance of flurries or showers. Windy at times. |
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Morning |
Temperature: -1°C |
| Cloudy with a chance of flurries. Windy at times. |
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Afternoon |
Temperature: -1°C |
| Cloudy. Windy at times. |
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Evening |
Temperature: -5°C |
| Cloudy. Windy at times. |
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