Reference Data in Harlow 11 indicators covering reference data for Harlow. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 7.09 Degree days 2025 down 41.4% 1109th Cooling and heating degree days - Cities and FUAs — Change in cooling -10.52 Degree days 2025 down 90.9% 708th Cooling and heating degree days - Cities and FUAs 1,244 Degree days 2025 down 31.8% 801st Cooling and heating degree days - Cities and FUAs — Change in heating -812.37 Degree days 2025 down 247.9% 1267th Precipitation - Cities and FUAs — Extreme precipitation days 0 Days per year 2024 down 100.0% 1295th Precipitation - Cities and FUAs — Change in extreme precipitation -1.12 Days per year 2024 down 276.4% 1109th Dependency ratio - Cities and FUAs 22.2 Percentage of population aged 15-64 years 2024 down 6.7% 957th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 down 100.0% 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Internet speed - Cities and FUAs — Downloading speed 5.5 Percentage of national value 2025 down 88.0% 656th Internet speed - Cities and FUAs — Uploading speed -50.9 Percentage of national value 2025 down 3,293.3% 1285th