 |
 Current St Catharines Weather Conditions |
Updated September 16th at 8:00 am |
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| Mostly Sunny |
| Temperature: | 54°F |
Dew Point: | 54°F |
| Barometer: | 30.24 inHg |
Wind: | N 4 Mph |
| Humidity: | 100.0% |
Visibility: | 0M |
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| St Catharines Weather Forecast Summary |
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Today
Sep 16th
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Wednesday
Sep 17th
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Thursday
Sep 18th
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Friday
Sep 19th
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Saturday
Sep 20th
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 |
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Mostly Sunny |
Cloudy |
Cloudy |
Mostly Sunny |
Cloudy |
83°F
|
80°F
63°F |
82°F
62°F |
70°F
55°F |
77°F
53°F |
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| St Catharines Detailed Weather Forecast |
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| Tuesday, September 16th, 2025 |
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Morning |
Temperature: 79°F |
| Sunny. |
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Afternoon |
Temperature: 75°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Wednesday, September 17th, 2025 |
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Overnight |
Temperature: 63°F |
| Cloudy. |
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Morning |
Temperature: 77°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 75°F |
| Cloudy. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Thursday, September 18th, 2025 |
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Overnight |
Temperature: 64°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 79°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 74°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 64°F |
| Clear. |
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| Friday, September 19th, 2025 |
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Overnight |
Temperature: 59°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 67°F |
| Sunny. |
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Afternoon |
Temperature: 66°F |
| Sunny. |
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Evening |
Temperature: 57°F |
| Clear. |
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| Saturday, September 20th, 2025 |
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Overnight |
Temperature: 54°F |
| Clear. |
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Morning |
Temperature: 70°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 71°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 64°F |
| Cloudy. |
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| Sunday, September 21st, 2025 |
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Overnight |
Temperature: 64°F |
| Cloudy. |
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Morning |
Temperature: 78°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 79°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 73°F |
| Cloudy. Windy at times. |
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| Monday, September 22nd, 2025 |
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Overnight |
Temperature: 70°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 82°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 82°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 74°F |
| Clear. Windy at times. |
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| Tuesday, September 23rd, 2025 |
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Overnight |
Temperature: 70°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 67°F |
| Cloudy with showers likely. Slight chance of a thunderstorm. Windy. |
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Afternoon |
Temperature: 71°F |
| Sunny with a chance of showers. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 63°F |
| Clear. |
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| Wednesday, September 24th, 2025 |
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Overnight |
Temperature: 65°F |
| Cloudy. Windy. |
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Morning |
Temperature: 75°F |
| Mostly sunny with a chance of showers. Windy. |
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Afternoon |
Temperature: 78°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 65°F |
| Clear. Windy at times. |
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