Lambert-St. Louis International Airport (STL) 15 Day Weather Forecast, Saint Louis United States
Current weather conditions and 15 day weather forecast for Lambert-St. Louis International Airport in Saint Louis, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at STL
| 13 September 2026 Sun 24.2 ° C ( 75.6°F )  Light rain shower |
Feels Like : 26.4 ° C / 79.5°F Humidity : % 68 Pressure : 1015 mb Wind Speed : 3.6 kmph / 2.2 miles from WNW 
Visibility : 10 km Precipitation (rainfall) : 0.75 mm Cloud (%) : 100 |
15-day weather forecast for Lambert-St. Louis International Airport, Saint Louis, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun |  Overcast |
18.3 ° C | 32.7 ° C | 25.7 ° C | % 61 | 23.4 km/h | 64% |
| 14 September 2026 Mon |  Sunny |
15.7 ° C | 29.3 ° C | 22.7 ° C | % 61 | 18.4 km/h | 7% |
| 15 September 2026 Tue | Sunny |
24.2 ° C | 36.4 ° C | 28.1 ° C | % 62 | 16.6 km/h | 57% |
| 16 September 2026 Wed | Overcast |
22.3 ° C | 33.2 ° C | 27.3 ° C | % 70 | 14.4 km/h | 68% |
| 17 September 2026 Thu | Sunny |
24.8 ° C | 35.5 ° C | 29.1 ° C | % 58 | 18.4 km/h | 61% |
| 18 September 2026 Fri | Overcast |
21.2 ° C | 30 ° C | 25.1 ° C | % 77 | 10.8 km/h | 75% |
| 19 September 2026 Sat | Overcast |
21.9 ° C | 34.9 ° C | 26.5 ° C | % 70 | 15.8 km/h | 76% |
| 20 September 2026 Sun |  Patchy rain nearby |
18.4 ° C | 24.1 ° C | 21.4 ° C | % 86 | 16.6 km/h | 86% |
| 21 September 2026 Mon | Light rain shower |
15.2 ° C | 17.8 ° C | 16.2 ° C | % 95 | 19.1 km/h | 93% |
| 22 September 2026 Tue | Light rain shower |
15.3 ° C | 17.4 ° C | 16.4 ° C | % 97 | 14.8 km/h | 94% |
| 23 September 2026 Wed |  Mist |
16.9 ° C | 20.7 ° C | 18.9 ° C | % 93 | 13.3 km/h | 92% |
| 24 September 2026 Thu | Patchy rain nearby |
18.8 ° C | 25.9 ° C | 21.7 ° C | % 83 | 9.4 km/h | 64% |
| 25 September 2026 Fri | Sunny |
20.8 ° C | 29.9 ° C | 24.7 ° C | % 73 | 10.4 km/h | 6% |
| 26 September 2026 Sat | Sunny |
21.6 ° C | 29.5 ° C | 25.2 ° C | % 69 | 13.3 km/h | 5% |
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