Yes
you do need a jacket based on the weather in St. Catharines, ON, Canada 34 seconds ago
Why? Because it's pretty chilly!
56°F13°C & Mostly Clear
Wind is 4 mph6 km/h from the South, gusting to 6 mph9 km/h
| September 10 | ||||
| 3am | 56°F13°C | 4 mph6 km/h South | Mostly Clear | |
| 4am | 55°F13°C | 5 mph8 km/h South | Mostly Cloudy | |
| 5am | 55°F13°C | 5 mph8 km/h South | Mostly Clear | |
| 6am | 55°F13°C | 4 mph7 km/h South | Mostly Cloudy | |
| 7am | 55°F13°C | 6 mph9 km/h South | Mostly Cloudy | |
| 8am | 57°F14°C | 4 mph7 km/h Southwest | Mostly Cloudy | |
| 9am | 63°F17°C | 4 mph6 km/h Southwest | Partly Cloudy | |
| 10am | 67°F19°C | 5 mph8 km/h Southwest | Mostly Cloudy | |
| 11am | 70°F21°C | 4 mph7 km/h Southwest | Mostly Cloudy | |
| 12pm | 72°F22°C | 3 mph5 km/h West | Mostly Cloudy | |
| 1pm | 73°F23°C | 3 mph5 km/h Northwest | Mostly Cloudy | |
| 2pm | 74°F23°C | 3 mph5 km/h Northwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 54°F12°C | 74°F23°C | 4 mph6 km/h from West | Mostly Cloudy | Partly Cloudy |
| September 11 | 57°F14°C | 73°F23°C | 5 mph8 km/h from North | Mostly Clear | Mostly Clear |
| September 12 | 58°F14°C | 74°F23°C | 4 mph7 km/h from Northeast | Mostly Clear | Partly Cloudy |
| September 13 | 59°F15°C | 75°F24°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Rain |
| September 14 | 60°F16°C | 71°F22°C | 7 mph12 km/h from North | Mostly Clear | Mostly Clear |
| September 15 | 57°F14°C | 71°F21°C | 8 mph13 km/h from Northeast | Mostly Clear | Partly Cloudy |
| September 16 | 59°F15°C | 73°F23°C | 5 mph7 km/h from North | Partly Cloudy | Mostly Clear |
Yes
Low of 57°F14°C, High of 73°F23°CWind: 5 mph8 km/h
Precipitation: None