No
you don't need a jacket based on the weather in St. Louis, MO, USA 3 seconds ago
79°F26°C & Clear
Wind is 4 mph6 km/h from the Northeast, gusting to 7 mph12 km/h
| September 17 | ||||
| 10pm | 77°F25°C | 4 mph7 km/h Northeast | Clear | |
| 11pm | 75°F24°C | 4 mph7 km/h Northeast | Clear | |
| September 18 | ||||
| 12am | 73°F23°C | 4 mph6 km/h East | Clear | |
| 1am | 71°F22°C | 3 mph4 km/h East | Clear | |
| 2am | 70°F21°C | 3 mph5 km/h East | Clear | |
| 3am | 68°F20°C | 1 mph2 km/h Northeast | Clear | |
| 4am | 67°F19°C | 2 mph4 km/h East | Clear | |
| 5am | 66°F19°C | 3 mph5 km/h East | Clear | |
| 6am | 65°F18°C | 2 mph4 km/h East | Clear | |
| 7am | 64°F18°C | 2 mph4 km/h East | Clear | |
| 8am | 63°F17°C | 3 mph4 km/h East | Clear | |
| 9am | 67°F19°C | 3 mph4 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 63°F17°C | 92°F33°C | 2 mph3 km/h from Northeast | Clear | Clear |
| September 18 | 63°F17°C | 91°F33°C | 2 mph4 km/h from Southeast | Mostly Clear | Mostly Cloudy |
| September 19 | 67°F20°C | 84°F29°C | 4 mph7 km/h from West | Mostly Cloudy | Partly Cloudy |
| September 20 | 66°F19°C | 84°F29°C | 4 mph6 km/h from Southwest | Mostly Cloudy | Cloudy |
| September 21 | 68°F20°C | 80°F26°C | 6 mph10 km/h from Southwest | Thunderstorms | Rain |
| September 22 | 67°F20°C | 78°F26°C | 6 mph10 km/h from Southwest | Thunderstorms | Mostly Cloudy |
| September 23 | 65°F18°C | 78°F26°C | 5 mph8 km/h from West | Partly Cloudy | Partly Cloudy |
No
Low of 64°F18°C, High of 91°F33°CWind: 2 mph4 km/h
Precipitation: None