Reference Data in Sonoma 12 indicators covering reference data for Sonoma. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 51.81 Degree days 2025 down 79.7% 763rd Cooling and heating degree days - Cities and FUAs — Change in cooling -185.63 Degree days 2025 down 1,167.2% 1294th Cooling and heating degree days - Cities and FUAs 890.27 Degree days 2025 up 1.4% 928th Cooling and heating degree days - Cities and FUAs — Change in heating -246.59 Degree days 2025 up 4.9% 542nd Precipitation - Cities and FUAs — Extreme precipitation days 16.77 Days per year 2024 up 51.3% 246th Precipitation - Cities and FUAs — Change in extreme precipitation 2.94 Days per year 2024 up 206.9% 331st Dependency ratio - Cities and FUAs 36.5 Percentage of population aged 15-64 years 2024 up 45.4% 282nd Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 1.09 Percentage of built-up area 2022 up 13.1% 103rd Main mode of transport to work - Cities and FUAs — Employed persons 205,272 Persons 2023 down 2.4% 90th Internet speed - Cities and FUAs — Downloading speed -11.5 Percentage of national value 2025 down 276.9% 1156th Internet speed - Cities and FUAs — Uploading speed -39.8 Percentage of national value 2025 up 24.9% 1236th