"Mild weather" refers to weather conditions that are neither extremely hot nor extremely cold. It means the temperature is pleasantly comfortable, without any extreme heat or coldness. Full definition
They're not completely waterproof but they are water resistant, which is more than enough protection for a general hike in mild weather. (geekwrapped.com)
If you're wondering what you should wear at a conference with mild weather in the winter, here's what I would suggest based on what I wore. (cottoncashmerecathair.com)
He enjoys mild weather and believes breakfast should be served at every meal. (shacknews.com)