Sonoma County Airport (STS) 15 Day Weather Forecast, Santa Rosa United States
Current weather conditions and 15 day weather forecast for Sonoma County Airport in Santa Rosa, 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 STS
| 17 December 2025 Wed 12.2 ° C ( 54°F )  Light rain |
Feels Like : 12.2 ° C / 53.9°F Humidity : % 93 Pressure : 1022 mb Wind Speed : 5.4 kmph / 3.4 miles from SW 
Visibility : 3.2 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15-day weather forecast for Sonoma County Airport, Santa Rosa, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 16 December 2025 Tue |  Patchy rain nearby |
4.4 ° C | 12.3 ° C | 8.1 ° C | % 89 | 5.4 km/h | 88% |
| 17 December 2025 Wed | Patchy rain nearby |
7.7 ° C | 16.2 ° C | 12.2 ° C | % 89 | 14.4 km/h | 79% |
| 18 December 2025 Thu |  Mist |
6.6 ° C | 11.4 ° C | 8.7 ° C | % 90 | 5.8 km/h | 0% |
| 19 December 2025 Fri | Patchy rain nearby |
8.2 ° C | 12.7 ° C | 10.5 ° C | % 95 | 9 km/h | 83% |
| 20 December 2025 Sat |  Moderate rain |
11.1 ° C | 16.3 ° C | 13 ° C | % 95 | 5.4 km/h | 83% |
| 21 December 2025 Sun | Moderate rain |
12.1 ° C | 14.6 ° C | 13.2 ° C | % 98 | 14 km/h | 88% |
| 22 December 2025 Mon | Moderate rain |
10.6 ° C | 12.5 ° C | 11.9 ° C | % 97 | 13.7 km/h | 86% |
| 23 December 2025 Tue | Moderate rain |
11 ° C | 13.5 ° C | 12.2 ° C | % 95 | 20.9 km/h | 86% |
| 24 December 2025 Wed | Moderate rain |
9.9 ° C | 13 ° C | 12 ° C | % 93 | 22.7 km/h | 83% |
| 25 December 2025 Thu | Patchy rain nearby |
6.3 ° C | 12.3 ° C | 8.8 ° C | % 90 | 29.9 km/h | 89% |
| 26 December 2025 Fri |  Partly Cloudy |
2.6 ° C | 11.4 ° C | 6.6 ° C | % 83 | 4 km/h | 0% |
| 27 December 2025 Sat |  Sunny |
2.2 ° C | 11.4 ° C | 6.4 ° C | % 77 | 4 km/h | 0% |
| 28 December 2025 Sun | Sunny |
4 ° C | 15 ° C | 8.4 ° C | % 74 | 3.6 km/h | 0% |
| 29 December 2025 Mon | Sunny |
5 ° C | 16.2 ° C | 9.5 ° C | % 81 | 3.6 km/h | 0% |
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