Yes

you do need a jacket based on the weather in St Thomas, ON, Canada 1 second ago

Why? Because the rain is just enough to ruin your hairstyle but not your mood and a jacket will keep you cozy, but you won't break a seat and it's really really huffing out there!
53°F12°C & Rain

Wind is 20 mph32 km/h from the Southwest, gusting to 35 mph56 km/h
April 3
3am53°F12°C20 mph32 km/h SouthwestThunderstorms
4am53°F12°C17 mph27 km/h SouthRain
5am55°F13°C21 mph33 km/h SouthwestRain
6am55°F13°C19 mph31 km/h SouthwestWindy
7am55°F13°C17 mph28 km/h SouthwestWindy
8am54°F12°C16 mph26 km/h SouthwestWindy
9am56°F13°C14 mph22 km/h SouthwestCloudy
10am58°F14°C15 mph24 km/h SouthwestCloudy
11am59°F15°C18 mph30 km/h SouthwestWindy
12pm60°F15°C20 mph32 km/h WestWindy
1pm61°F16°C21 mph33 km/h WestWindy
2pm61°F16°C20 mph33 km/h WestWindy
DateLowHighWindDayNight
April 344°F7°C61°F16°C17 mph28 km/h from WestWindyCloudy
April 438°F3°C54°F12°C6 mph10 km/h from NortheastMostly CloudyRain
April 540°F5°C56°F13°C11 mph18 km/h from WestRainRain
April 632°F-0°C42°F5°C14 mph22 km/h from NorthwestMostly CloudyMostly Cloudy
April 730°F-1°C42°F5°C10 mph16 km/h from SouthMostly CloudyMostly Cloudy
April 824°F-4°C33°F0°C17 mph27 km/h from NorthwestWindyMostly Clear
April 925°F-4°C41°F5°C13 mph21 km/h from SouthwestMostly CloudyMostly Cloudy

Yes

Low of 37°F3°C, High of 55°F13°C
Wind: 6 mph10 km/h
Precipitation: None

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