Yes
you do need a jacket based on the weather in St. Catharines, ON, Canada 1 second ago
Why? Because it's not very warm out.
53°F12°C & Mostly Cloudy
Wind is 9 mph15 km/h from the W, gusting to 16 mph26 km/h
| April 18 | ||||
| 10am | 54°F12°C | 10 mph16 km/h W | Mostly Cloudy | |
| 11am | 54°F12°C | 10 mph16 km/h W | Mostly Cloudy | |
| 12pm | 55°F13°C | 10 mph17 km/h W | Mostly Cloudy | |
| 1pm | 56°F13°C | 10 mph16 km/h W | Cloudy | |
| 2pm | 56°F13°C | 9 mph15 km/h W | Mostly Cloudy | |
| 3pm | 57°F14°C | 9 mph14 km/h W | Mostly Cloudy | |
| 4pm | 57°F14°C | 8 mph13 km/h W | Cloudy | |
| 5pm | 58°F14°C | 7 mph11 km/h W | Mostly Cloudy | |
| 6pm | 57°F14°C | 6 mph10 km/h SW | Cloudy | |
| 7pm | 56°F13°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 8pm | 54°F12°C | 6 mph9 km/h SW | Mostly Cloudy | |
| 9pm | 52°F11°C | 5 mph9 km/h S | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 18 | 46°F8°C | 58°F14°C | 8 mph14 km/h from W | Mostly Cloudy | Mostly Cloudy |
| April 19 | 45°F7°C | 59°F15°C | 13 mph20 km/h from SW | Drizzle | Partly Cloudy |
| April 20 | 39°F4°C | 48°F9°C | 16 mph25 km/h from W | Windy | Mostly Clear |
| April 21 | 36°F2°C | 51°F10°C | 12 mph19 km/h from W | Partly Cloudy | Mostly Clear |
| April 22 | 37°F3°C | 56°F13°C | 8 mph12 km/h from SW | Mostly Clear | Partly Cloudy |
| April 23 | 42°F6°C | 57°F14°C | 9 mph15 km/h from SW | Cloudy | Drizzle |
| April 24 | 37°F3°C | 46°F8°C | 13 mph21 km/h from N | Partly Cloudy | Clear |
Yes
Low of 45°F7°C, High of 59°F15°CWind: 13 mph20 km/h
Precipitation: 54% rain