Harpenden Wind ForecastUnited KingdomEEHertfordshireHarpenden1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Harpenden wind forecast issued today at 12:11 am. Next forecast at approx. 12:11 pm.Harpenden Wind Statistics December WindRothamsted (1km)2025NovemberDecemberStrongest – Average December–Strongest – Average November–Strongest – Average 2025–Climate (–Present)Rothamsted (1km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest – Average 2020–2025–Get WillyWeather+ to remove ads