Kindliness, n.
1. Natural inclination; natural course. [Obs.] Milton.
2. The quality or state of being kindly; benignity; benevolence; gentleness; tenderness; as, kindliness of disposition, of treatment, or of words. In kind a father, but not in kindliness. Sackville.
3. Softness; mildness; propitiousness; as, kindliness of weather, or of a season. Fruits and corn are much advanced by temper of the air and kindliness of seasons. Whitlock.
Shades of meaning
Fernald has no entry of its own for kindliness; he lists it under benevolence.
He lists it without comment; the entries above explain its neighbors.