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
| 21 December 2025 Sun 5.1 ° C ( 41.2°F )  Partly cloudy |
Feels Like : 2 ° C / 35.5°F Humidity : % 53 Pressure : 1020 mb Wind Speed : 14.4 kmph / 8.9 miles from NNW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
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 |
|---|---|---|---|---|---|---|---|
| 20 December 2025 Sat |  Sunny |
0.6 ° C | 16 ° C | 6.4 ° C | % 55 | 21.2 km/h | 0% |
| 21 December 2025 Sun | Sunny |
-4.8 ° C | 3.4 ° C | 0.1 ° C | % 69 | 13.3 km/h | 0% |
| 22 December 2025 Mon | Partly Cloudy |
-1.4 ° C | 7.2 ° C | 2.6 ° C | % 76 | 17.3 km/h | 0% |
| 23 December 2025 Tue |  Overcast |
5.4 ° C | 9.7 ° C | 7.7 ° C | % 90 | 12.6 km/h | 0% |
| 24 December 2025 Wed |  Cloudy |
6.8 ° C | 17.3 ° C | 11.9 ° C | % 79 | 19.8 km/h | 0% |
| 25 December 2025 Thu | Partly Cloudy |
16.3 ° C | 22.7 ° C | 18.1 ° C | % 79 | 20.2 km/h | 0% |
| 26 December 2025 Fri | Sunny |
4 ° C | 9.8 ° C | 9.5 ° C | % 60 | 20.9 km/h | 0% |
| 27 December 2025 Sat | Sunny |
2 ° C | 8.4 ° C | 4.8 ° C | % 58 | 8.3 km/h | 0% |
| 28 December 2025 Sun | Sunny |
4 ° C | 11.9 ° C | 7.4 ° C | % 57 | 15.5 km/h | 0% |
| 29 December 2025 Mon | Partly Cloudy |
9.7 ° C | 20.1 ° C | 14.6 ° C | % 77 | 21.6 km/h | 0% |
| 30 December 2025 Tue |  Patchy rain nearby |
12.9 ° C | 16 ° C | 15.5 ° C | % 88 | 18.4 km/h | 89% |
| 31 December 2025 Wed | Patchy rain nearby |
8.9 ° C | 9.4 ° C | 9.6 ° C | % 84 | 10.4 km/h | 77% |
| 01 January 2026 Thu | Patchy rain nearby |
7.9 ° C | 8.8 ° C | 8.3 ° C | % 86 | 13 km/h | 84% |
| 02 January 2026 Fri | Partly Cloudy |
6.2 ° C | 12.6 ° C | 8.9 ° C | % 82 | 7.2 km/h | 0% |
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