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
| 13 September 2026 Sun 9.9 ° C ( 49.8°F )  Clear |
Feels Like : 9 ° C / 48.2°F Humidity : % 86 Pressure : 1016 mb Wind Speed : 6.5 kmph / 4 miles from NW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
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 |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun | Sunny |
9.6 ° C | 29.2 ° C | 18 ° C | % 53 | 12.2 km/h | 2% |
| 14 September 2026 Mon |  Smoky haze |
13.8 ° C | 30.2 ° C | 20.7 ° C | % 42 | 17.6 km/h | 3% |
| 15 September 2026 Tue | Smoky haze |
13.1 ° C | 30.9 ° C | 19.7 ° C | % 52 | 16.9 km/h | 3% |
| 16 September 2026 Wed | Sunny |
12.5 ° C | 30.4 ° C | 19.2 ° C | % 55 | 16.6 km/h | 4% |
| 17 September 2026 Thu | Sunny |
12.4 ° C | 29 ° C | 18.7 ° C | % 56 | 14.8 km/h | 2% |
| 18 September 2026 Fri | Sunny |
12 ° C | 30.4 ° C | 19.1 ° C | % 54 | 14.4 km/h | 2% |
| 19 September 2026 Sat | Sunny |
13.4 ° C | 31.8 ° C | 21 ° C | % 46 | 13.3 km/h | 1% |
| 20 September 2026 Sun | Sunny |
12.7 ° C | 29.9 ° C | 19.2 ° C | % 49 | 15.8 km/h | 3% |
| 21 September 2026 Mon | Sunny |
10.8 ° C | 27.6 ° C | 17.7 ° C | % 56 | 12.2 km/h | 3% |
| 22 September 2026 Tue | Sunny |
14.1 ° C | 30.1 ° C | 20 ° C | % 51 | 15.1 km/h | 2% |
| 23 September 2026 Wed | Sunny |
12.9 ° C | 28.3 ° C | 19.1 ° C | % 56 | 13.7 km/h | 2% |
| 24 September 2026 Thu | Sunny |
11.4 ° C | 27.6 ° C | 18.1 ° C | % 54 | 11.5 km/h | 2% |
| 25 September 2026 Fri | Sunny |
11.7 ° C | 27.8 ° C | 18.4 ° C | % 40 | 13.7 km/h | 1% |
| 26 September 2026 Sat | Sunny |
9.6 ° C | 24.7 ° C | 15.8 ° C | % 43 | 23.8 km/h | 2% |
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