Yes
you do need a jacket based on the weather in Sarnia, ON, Canada 1 second ago
Why? Because it's fairly windy outside!
74°F23°C & Clear
Wind is 11 mph18 km/h from the South, gusting to 21 mph33 km/h
| September 3 | ||||
| 12pm | 74°F24°C | 12 mph19 km/h South | Mostly Clear | |
| 1pm | 76°F24°C | 15 mph24 km/h Southwest | Mostly Clear | |
| 2pm | 76°F25°C | 16 mph26 km/h Southwest | Windy | |
| 3pm | 77°F25°C | 16 mph26 km/h Southwest | Windy | |
| 4pm | 77°F25°C | 16 mph26 km/h Southwest | Windy | |
| 5pm | 75°F24°C | 15 mph24 km/h Southwest | Cloudy | |
| 6pm | 74°F23°C | 13 mph21 km/h Southwest | Cloudy | |
| 7pm | 70°F21°C | 10 mph17 km/h West | Cloudy | |
| 8pm | 67°F19°C | 10 mph16 km/h West | Cloudy | |
| 9pm | 66°F19°C | 9 mph14 km/h West | Drizzle | |
| 10pm | 65°F18°C | 11 mph18 km/h Southwest | Rain | |
| 11pm | 64°F18°C | 10 mph17 km/h West | Rain | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 3 | 54°F12°C | 77°F25°C | 11 mph18 km/h from Southwest | Partly Cloudy | Rain |
| September 4 | 54°F12°C | 65°F18°C | 9 mph15 km/h from West | Drizzle | Mostly Clear |
| September 5 | 51°F10°C | 71°F22°C | 19 mph31 km/h from Southwest | Windy | Partly Cloudy |
| September 6 | 49°F9°C | 65°F19°C | 11 mph18 km/h from West | Partly Cloudy | Mostly Clear |
| September 7 | 48°F9°C | 63°F17°C | 9 mph14 km/h from West | Partly Cloudy | Mostly Clear |
| September 8 | 47°F8°C | 66°F19°C | 5 mph8 km/h from North | Mostly Clear | Clear |
| September 9 | 48°F9°C | 70°F21°C | 6 mph10 km/h from Southeast | Mostly Clear | Mostly Clear |
Yes
Low of 54°F12°C, High of 64°F18°CWind: 9 mph15 km/h
Precipitation: 37% rain