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
| 15 December 2025 Mon -10.6 ° C ( 12.9°F )  Clear |
Feels Like : -17.6 ° C / 0.3°F Humidity : % 61 Pressure : 1032 mb Wind Speed : 15.5 kmph / 9.6 miles from S 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
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 |
|---|---|---|---|---|---|---|---|
| 15 December 2025 Mon | Sunny |
-12 ° C | 8.4 ° C | -3.2 ° C | % 47 | 19.4 km/h | 0% |
| 16 December 2025 Tue | Sunny |
-0.4 ° C | 9.6 ° C | 3.1 ° C | % 62 | 15.8 km/h | 0% |
| 17 December 2025 Wed |  Cloudy |
0.3 ° C | 11.9 ° C | 4.7 ° C | % 82 | 16.2 km/h | 0% |
| 18 December 2025 Thu |  Moderate rain |
-2.7 ° C | 13.9 ° C | 8.7 ° C | % 67 | 41.4 km/h | 72% |
| 19 December 2025 Fri | Sunny |
-4.3 ° C | 1.5 ° C | -2 ° C | % 42 | 30.2 km/h | 0% |
| 20 December 2025 Sat |  Patchy rain nearby |
1.8 ° C | 13 ° C | 7.7 ° C | % 66 | 21.2 km/h | 87% |
| 21 December 2025 Sun | Sunny |
0.1 ° C | 5.5 ° C | 2.6 ° C | % 63 | 20.2 km/h | 0% |
| 22 December 2025 Mon |  Partly Cloudy |
-0.1 ° C | 7.6 ° C | 3.3 ° C | % 53 | 19.1 km/h | 0% |
| 23 December 2025 Tue | Sunny |
3.6 ° C | 14.8 ° C | 8.6 ° C | % 63 | 20.2 km/h | 0% |
| 24 December 2025 Wed | Sunny |
2.8 ° C | 8.6 ° C | 7.2 ° C | % 68 | 19.1 km/h | 0% |
| 25 December 2025 Thu | Patchy rain nearby |
-1 ° C | 4.5 ° C | 2.1 ° C | % 44 | 16.2 km/h | 83% |
| 26 December 2025 Fri | Partly Cloudy |
-5.2 ° C | 2.8 ° C | 0.7 ° C | % 61 | 28.8 km/h | 0% |
| 27 December 2025 Sat | Partly Cloudy |
-7.8 ° C | -2.9 ° C | -5.2 ° C | % 26 | 16.9 km/h | 0% |
| 28 December 2025 Sun | Partly Cloudy |
-3.2 ° C | 3.7 ° C | -0.3 ° C | % 43 | 17.6 km/h | 0% |
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