No
you don't need a jacket based on the weather in St. Catharines, ON, Canada 2 minutes ago
70°F21°C & Clear
Wind is 7 mph12 km/h from the North, gusting to 11 mph17 km/h
| September 19 | ||||
| 3pm | 70°F21°C | 7 mph12 km/h North | Clear | |
| 4pm | 71°F22°C | 7 mph11 km/h Northeast | Clear | |
| 5pm | 71°F22°C | 6 mph10 km/h Northeast | Clear | |
| 6pm | 71°F21°C | 5 mph9 km/h Northeast | Clear | |
| 7pm | 68°F20°C | 4 mph7 km/h Northeast | Clear | |
| 8pm | 65°F18°C | 4 mph7 km/h Northeast | Clear | |
| 9pm | 63°F17°C | 4 mph7 km/h Northeast | Clear | |
| 10pm | 61°F16°C | 4 mph7 km/h Northeast | Clear | |
| 11pm | 60°F15°C | 4 mph6 km/h Northeast | Clear | |
| September 20 | ||||
| 12am | 59°F15°C | 4 mph7 km/h East | Mostly Clear | |
| 1am | 58°F14°C | 5 mph8 km/h East | Mostly Clear | |
| 2am | 57°F14°C | 6 mph9 km/h East | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 19 | 59°F15°C | 71°F22°C | 6 mph10 km/h from Northeast | Partly Cloudy | Clear |
| September 20 | 54°F12°C | 69°F21°C | 12 mph20 km/h from East | Clear | Partly Cloudy |
| September 21 | 56°F13°C | 78°F26°C | 6 mph9 km/h from South | Partly Cloudy | Drizzle |
| September 22 | 65°F18°C | 75°F24°C | 11 mph17 km/h from Southwest | Drizzle | Rain |
| September 23 | 65°F18°C | 72°F22°C | 7 mph12 km/h from Southwest | Rain | Drizzle |
| September 24 | 60°F16°C | 68°F20°C | 9 mph14 km/h from North | Partly Cloudy | Partly Cloudy |
| September 25 | 58°F15°C | 69°F21°C | 8 mph13 km/h from Northeast | Partly Cloudy | Partly Cloudy |
Yes
Low of 55°F13°C, High of 69°F21°CWind: 12 mph20 km/h
Precipitation: None