No
you don't need a jacket based on the weather in St Clair County, IL, USA 1 second ago
79°F26°C & Mostly Cloudy
Wind is 5 mph8 km/h from the South, gusting to 8 mph13 km/h
| July 13 | ||||
| 11am | 81°F27°C | 6 mph9 km/h South | Partly Cloudy | |
| 12pm | 83°F28°C | 6 mph9 km/h South | Partly Cloudy | |
| 1pm | 84°F29°C | 6 mph10 km/h South | Partly Cloudy | |
| 2pm | 83°F29°C | 7 mph11 km/h Southwest | Cloudy | |
| 3pm | 83°F28°C | 6 mph9 km/h South | Thunderstorms | |
| 4pm | 82°F28°C | 7 mph11 km/h Southwest | Thunderstorms | |
| 5pm | 80°F26°C | 6 mph10 km/h West | Drizzle | |
| 6pm | 78°F26°C | 4 mph6 km/h Southwest | Rain | |
| 7pm | 78°F26°C | 3 mph4 km/h Northeast | Rain | |
| 8pm | 77°F25°C | 4 mph6 km/h Southeast | Cloudy | |
| 9pm | 76°F25°C | 3 mph5 km/h Southeast | Cloudy | |
| 10pm | 75°F24°C | 2 mph4 km/h Southeast | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 13 | 72°F22°C | 84°F29°C | 5 mph9 km/h from South | Thunderstorms | Drizzle |
| July 14 | 71°F21°C | 85°F29°C | 3 mph5 km/h from Northeast | Drizzle | Partly Cloudy |
| July 15 | 72°F22°C | 87°F30°C | 5 mph8 km/h from South | Rain | Mostly Clear |
| July 16 | 72°F22°C | 88°F31°C | 7 mph12 km/h from Southwest | Thunderstorms | Mostly Clear |
| July 17 | 75°F24°C | 92°F33°C | 8 mph13 km/h from Southwest | Thunderstorms | Partly Cloudy |
| July 18 | 75°F24°C | 89°F32°C | 4 mph6 km/h from Northwest | Partly Cloudy | Partly Cloudy |
| July 19 | 75°F24°C | 91°F33°C | 5 mph8 km/h from Southwest | Mostly Clear | Partly Cloudy |
No
Low of 71°F22°C, High of 85°F30°CWind: 3 mph5 km/h
Precipitation: 33% rain