Reference Data in Sonoma 16 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% 756th Cooling and heating degree days - Cities and FUAs — Change in cooling -185.63 Degree days 2025 down 1,167.2% 1286th Cooling and heating degree days - Cities and FUAs 890.27 Degree days 2025 up 1.4% 923rd Cooling and heating degree days - Cities and FUAs — Change in heating -246.59 Degree days 2025 up 4.9% 539th Cooling and heating degree days - Cities and FUAs — Change in heating -573.1 % change on previous year 2025 down 2,658.0% 1276th Cooling and heating degree days - Cities and FUAs, annual growth rate -19.08 % change on previous year 2025 down 304.6% 999th Cooling and heating degree days - Cities and FUAs — Change in cooling -286.12 % change on previous year 2025 down 3,599.2% 1161st Cooling and heating degree days - Cities and FUAs — Cooling degree -84.63 % change on previous year 2025 down 14,777.3% 1113th Precipitation - Cities and FUAs — Extreme precipitation days 16.77 Days per year 2024 up 51.3% 244th Precipitation - Cities and FUAs — Change in extreme precipitation 2.94 Days per year 2024 up 206.9% 328th Dependency ratio - Cities and FUAs 36.5 Percentage of population aged 15-64 years 2024 up 45.4% 279th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 271st 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% 88th Internet speed - Cities and FUAs — Downloading speed -11.5 Percentage of national value 2025 down 276.9% 1147th Internet speed - Cities and FUAs — Uploading speed -39.8 Percentage of national value 2025 up 24.9% 1227th