Is light rain a reason to skip the walk?
Not automatically. Adjust duration, route and drying afterwards according to your dog and the conditions.
See whether to go normally, shorten the walk, or wait.
Rain itself does not automatically make a walk unsafe. The decision changes when precipitation is intense, visibility is poor, gusts are strong or a thunderstorm is involved.
Weather data is guidance. Your dog, the ground and local conditions still come first. Methodology →
Not automatically. Adjust duration, route and drying afterwards according to your dog and the conditions.
Thunderstorms, very strong gusts, flooding or other local hazards are reasons to postpone the normal walk.