No
you don't need a jacket based on the weather in Sarnia, ON, Canada 1 second ago
79°F26°C & Clear
Wind is 11 mph17 km/h from the Southwest, gusting to 17 mph28 km/h
| September 27 | ||||
| 2pm | 80°F26°C | 11 mph18 km/h Southwest | Clear | |
| 3pm | 81°F27°C | 11 mph18 km/h Southwest | Clear | |
| 4pm | 82°F28°C | 10 mph16 km/h Southwest | Clear | |
| 5pm | 82°F28°C | 8 mph13 km/h West | Clear | |
| 6pm | 80°F26°C | 6 mph10 km/h Southwest | Clear | |
| 7pm | 75°F24°C | 5 mph9 km/h South | Clear | |
| 8pm | 72°F22°C | 4 mph7 km/h South | Clear | |
| 9pm | 69°F21°C | 6 mph10 km/h South | Clear | |
| 10pm | 68°F20°C | 7 mph11 km/h Southwest | Clear | |
| 11pm | 67°F19°C | 6 mph10 km/h Southwest | Clear | |
| September 28 | ||||
| 12am | 65°F19°C | 6 mph10 km/h Southwest | Clear | |
| 1am | 64°F18°C | 6 mph9 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 27 | 57°F14°C | 82°F28°C | 7 mph12 km/h from Southwest | Mostly Clear | Clear |
| September 28 | 58°F14°C | 71°F22°C | 8 mph12 km/h from North | Mostly Clear | Clear |
| September 29 | 52°F11°C | 75°F24°C | 3 mph5 km/h from Northeast | Clear | Clear |
| September 30 | 55°F13°C | 72°F22°C | 8 mph12 km/h from Northeast | Clear | Clear |
| October 1 | 54°F12°C | 68°F20°C | 9 mph14 km/h from Northeast | Partly Cloudy | Partly Cloudy |
| October 2 | 49°F9°C | 69°F21°C | 8 mph12 km/h from East | Mostly Clear | Mostly Clear |
| October 3 | 48°F9°C | 74°F23°C | 7 mph11 km/h from South | Clear | Mostly Clear |
Yes
Low of 57°F14°C, High of 72°F22°CWind: 8 mph12 km/h
Precipitation: None