I take my children to school in the rain regularly with this. Covered areas for ecargo bikes are relatively common. https://www.ternbicycles.com/us/accessories

I take my children to school in the rain regularly with this. Covered areas for ecargo bikes are relatively common. https://www.ternbicycles.com/us/accessories/471/storm-shield https://www.ternbicycles.com/us/accessories/471/storm-shield