Yes
you do need a jacket based on the weather in St. Catharines, ON, Canada 21 minutes ago
Why? Because it's pretty chilly!
50°F10°C & Mostly Clear
Wind is 4 mph6 km/h from the W, gusting to 7 mph12 km/h
| October 17 | ||||
| 12pm | 53°F11°C | 4 mph6 km/h SW | Clear | |
| 1pm | 55°F13°C | 4 mph6 km/h SW | Clear | |
| 2pm | 57°F14°C | 4 mph7 km/h SW | Clear | |
| 3pm | 58°F14°C | 4 mph7 km/h SW | Clear | |
| 4pm | 58°F15°C | 5 mph7 km/h SW | Clear | |
| 5pm | 58°F14°C | 5 mph8 km/h SW | Clear | |
| 6pm | 56°F13°C | 5 mph7 km/h SW | Clear | |
| 7pm | 52°F11°C | 6 mph9 km/h SW | Clear | |
| 8pm | 50°F10°C | 6 mph10 km/h SW | Clear | |
| 9pm | 48°F9°C | 6 mph10 km/h SW | Clear | |
| 10pm | 47°F9°C | 6 mph10 km/h SW | Clear | |
| 11pm | 46°F8°C | 6 mph10 km/h SW | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 17 | 37°F3°C | 58°F15°C | 4 mph7 km/h from SW | Clear | Clear |
| October 18 | 41°F5°C | 64°F18°C | 5 mph9 km/h from SW | Clear | Clear |
| October 19 | 44°F7°C | 67°F19°C | 6 mph9 km/h from SW | Mostly Clear | Mostly Clear |
| October 20 | 48°F9°C | 67°F20°C | 11 mph18 km/h from SW | Mostly Clear | Mostly Clear |
| October 21 | 52°F11°C | 70°F21°C | 10 mph16 km/h from SW | Mostly Clear | Mostly Clear |
| October 22 | 52°F11°C | 71°F22°C | 7 mph11 km/h from SW | Mostly Clear | Mostly Cloudy |
| October 23 | 49°F9°C | 67°F19°C | 15 mph24 km/h from SW | Partly Cloudy | Mostly Cloudy |
Yes
Low of 41°F5°C, High of 64°F18°CWind: 5 mph9 km/h
Precipitation: None