 |
 Current St Catharines Weather Conditions |
Updated August 13th at 1:00 pm |
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| Mostly Cloudy |
| Temperature: | 26°C |
Dew Point: | 16°C |
| Barometer: | 101.4 kPa |
Wind: | N 34 Km/h |
| Humidity: | 54.1% |
Visibility: | 0 Km |
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| St Catharines Weather Forecast Summary |
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Today
Aug 13th
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Friday
Aug 14th
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Saturday
Aug 15th
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Sunday
Aug 16th
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Monday
Aug 17th
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 |
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Mostly Sunny |
Sunny |
Mostly Sunny |
Mix of Cloud and Sun |
Mostly Sunny |
27°C
|
28°C
18°C |
27°C
16°C |
24°C
20°C |
26°C
19°C |
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| St Catharines Detailed Weather Forecast |
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| Thursday, August 13th, 2026 |
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Afternoon |
Temperature: 27°C |
| Sunny with cloudy periods. |
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Evening |
Temperature: 22°C |
| Mostly clear. |
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| Friday, August 14th, 2026 |
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Overnight |
Temperature: 18°C |
| Clear. |
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Morning |
Temperature: 23°C |
| Sunny. |
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Afternoon |
Temperature: 28°C |
| Sunny with cloudy periods. |
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Evening |
Temperature: 21°C |
| Clear. |
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| Saturday, August 15th, 2026 |
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Overnight |
Temperature: 16°C |
| Clear. |
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Morning |
Temperature: 20°C |
| Mostly sunny. |
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Afternoon |
Temperature: 27°C |
| A mix of sun and cloud. |
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Evening |
Temperature: 22°C |
| Mostly cloudy. |
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| Sunday, August 16th, 2026 |
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Overnight |
Temperature: 21°C |
| Mostly cloudy. |
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Morning |
Temperature: 23°C |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 22°C |
| A mix of cloud and sun with a slight chance of showers. |
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Evening |
Temperature: 21°C |
| A mix of clear and cloudy skies. |
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| Monday, August 17th, 2026 |
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Overnight |
Temperature: 19°C |
| Clear with cloudy periods. |
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Morning |
Temperature: 22°C |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 26°C |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 21°C |
| Mostly clear. |
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| Tuesday, August 18th, 2026 |
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Overnight |
Temperature: 17°C |
| Mostly clear. |
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Morning |
Temperature: 21°C |
| Mostly sunny. |
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Afternoon |
Temperature: 26°C |
| Mostly sunny. |
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Evening |
Temperature: 21°C |
| Mostly clear. |
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| Wednesday, August 19th, 2026 |
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Overnight |
Temperature: 19°C |
| Mostly clear. |
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Morning |
Temperature: 23°C |
| A mix of sun and cloud with a slight chance of showers or thundershowers. Windy at times. |
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Afternoon |
Temperature: 27°C |
| A mix of sun and cloud with a chance of showers or thundershowers. Windy at times. |
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Evening |
Temperature: 21°C |
| A mix of clear and cloudy skies. |
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| Thursday, August 20th, 2026 |
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Overnight |
Temperature: 17°C |
| Clear with cloudy periods. |
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Morning |
Temperature: 21°C |
| Sunny. |
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Afternoon |
Temperature: 27°C |
| Sunny. |
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Evening |
Temperature: 21°C |
| Mostly clear. |
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| Friday, August 21st, 2026 |
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Overnight |
Temperature: 19°C |
| Mostly clear. |
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Morning |
Temperature: 23°C |
| Mostly sunny. |
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Afternoon |
Temperature: 30°C |
| Mostly sunny. |
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Evening |
Temperature: 23°C |
| Mostly clear. |
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