Yes
you do need a jacket based on the weather in St. Catharines, ON, Canada 1 second ago
Why? Because it's pretty chilly!
58°F15°C & Partly Cloudy
Wind is 11 mph18 km/h from the Northeast, gusting to 18 mph29 km/h
| May 20 | ||||
| 5pm | 58°F15°C | 11 mph18 km/h Northeast | Cloudy | |
| 6pm | 59°F15°C | 11 mph17 km/h East | Partly Cloudy | |
| 7pm | 58°F14°C | 11 mph18 km/h East | Mostly Cloudy | |
| 8pm | 56°F13°C | 10 mph16 km/h East | Cloudy | |
| 9pm | 54°F12°C | 9 mph15 km/h East | Cloudy | |
| 10pm | 53°F12°C | 10 mph17 km/h East | Cloudy | |
| 11pm | 51°F11°C | 10 mph16 km/h East | Cloudy | |
| May 21 | ||||
| 12am | 51°F10°C | 11 mph17 km/h East | Cloudy | |
| 1am | 49°F9°C | 11 mph18 km/h East | Mostly Cloudy | |
| 2am | 48°F9°C | 12 mph19 km/h East | Mostly Cloudy | |
| 3am | 48°F9°C | 12 mph19 km/h East | Cloudy | |
| 4am | 48°F9°C | 11 mph18 km/h East | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 20 | 39°F4°C | 59°F15°C | 8 mph13 km/h from Northeast | Partly Cloudy | Cloudy |
| May 21 | 47°F8°C | 55°F13°C | 12 mph20 km/h from East | Rain | Rain |
| May 22 | 48°F9°C | 53°F12°C | 10 mph16 km/h from South | Rain | Drizzle |
| May 23 | 46°F8°C | 53°F11°C | 11 mph17 km/h from Northwest | Drizzle | Drizzle |
| May 24 | 44°F7°C | 58°F14°C | 10 mph16 km/h from Northwest | Mostly Cloudy | Mostly Clear |
| May 25 | 46°F8°C | 63°F17°C | 5 mph9 km/h from West | Partly Cloudy | Mostly Clear |
| May 26 | 48°F9°C | 65°F19°C | 5 mph7 km/h from North | Mostly Clear | Drizzle |
Yes
Low of 47°F9°C, High of 55°F13°CWind: 12 mph20 km/h
Precipitation: 86% rain