No
you don't need a jacket based on the weather in St. Catharines, ON, Canada 1 second ago
77°F25°C & Mostly Cloudy
Wind is 4 mph7 km/h from the South, gusting to 8 mph13 km/h
| August 9 | ||||
| 11pm | 76°F24°C | 5 mph8 km/h South | Partly Cloudy | |
| August 10 | ||||
| 12am | 75°F24°C | 5 mph8 km/h South | Mostly Cloudy | |
| 1am | 74°F23°C | 5 mph8 km/h South | Mostly Cloudy | |
| 2am | 73°F23°C | 6 mph9 km/h South | Mostly Cloudy | |
| 3am | 72°F22°C | 6 mph9 km/h South | Partly Cloudy | |
| 4am | 72°F22°C | 7 mph11 km/h South | Mostly Clear | |
| 5am | 72°F22°C | 7 mph12 km/h South | Mostly Clear | |
| 6am | 72°F22°C | 7 mph12 km/h South | Partly Cloudy | |
| 7am | 73°F23°C | 8 mph12 km/h South | Partly Cloudy | |
| 8am | 75°F24°C | 9 mph14 km/h South | Partly Cloudy | |
| 9am | 78°F25°C | 9 mph15 km/h South | Partly Cloudy | |
| 10am | 80°F27°C | 9 mph15 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 9 | 71°F22°C | 89°F32°C | 7 mph11 km/h from South | Mostly Clear | Partly Cloudy |
| August 10 | 72°F22°C | 88°F31°C | 9 mph14 km/h from South | Mostly Clear | Clear |
| August 11 | 72°F22°C | 88°F31°C | 9 mph14 km/h from Southwest | Clear | Clear |
| August 12 | 73°F23°C | 88°F31°C | 11 mph18 km/h from Southwest | Clear | Partly Cloudy |
| August 13 | 72°F22°C | 83°F28°C | 8 mph12 km/h from West | Drizzle | Mostly Clear |
| August 14 | 68°F20°C | 80°F26°C | 6 mph10 km/h from North | Mostly Clear | Mostly Clear |
| August 15 | 68°F20°C | 82°F28°C | 5 mph8 km/h from Northeast | Mostly Clear | Mostly Clear |
No
Low of 72°F22°C, High of 88°F31°CWind: 9 mph14 km/h
Precipitation: None