No
you don't need a jacket based on the weather in St Clair County, IL, USA 1 second ago
74°F23°C & Cloudy
Wind is 8 mph13 km/h from the Northwest, gusting to 12 mph20 km/h
| August 25 | ||||
| 6pm | 74°F23°C | 8 mph13 km/h North | Partly Cloudy | |
| 7pm | 73°F23°C | 7 mph11 km/h North | Mostly Cloudy | |
| 8pm | 71°F22°C | 5 mph8 km/h North | Partly Cloudy | |
| 9pm | 67°F19°C | 4 mph7 km/h North | Mostly Clear | |
| 10pm | 64°F18°C | 5 mph7 km/h North | Clear | |
| 11pm | 62°F17°C | 4 mph7 km/h North | Clear | |
| August 26 | ||||
| 12am | 60°F16°C | 4 mph7 km/h North | Clear | |
| 1am | 58°F14°C | 4 mph7 km/h North | Clear | |
| 2am | 56°F14°C | 4 mph6 km/h North | Clear | |
| 3am | 55°F13°C | 4 mph6 km/h North | Clear | |
| 4am | 53°F12°C | 3 mph5 km/h Northwest | Clear | |
| 5am | 53°F11°C | 3 mph5 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 25 | 56°F13°C | 74°F23°C | 6 mph10 km/h from Northwest | Partly Cloudy | Clear |
| August 26 | 51°F11°C | 76°F24°C | 6 mph10 km/h from North | Clear | Clear |
| August 27 | 51°F11°C | 77°F25°C | 4 mph6 km/h from South | Mostly Cloudy | Mostly Cloudy |
| August 28 | 57°F14°C | 79°F26°C | 4 mph7 km/h from South | Mostly Cloudy | Mostly Clear |
| August 29 | 58°F15°C | 80°F26°C | 6 mph10 km/h from Northeast | Mostly Clear | Partly Cloudy |
| August 30 | 57°F14°C | 79°F26°C | 7 mph11 km/h from East | Partly Cloudy | Mostly Clear |
| August 31 | 58°F14°C | 79°F26°C | 7 mph11 km/h from Northeast | Mostly Clear | Mostly Clear |
Yes
Low of 51°F11°C, High of 76°F25°CWind: 6 mph10 km/h
Precipitation: None