Missing one or two walks will not kill your dog
However walking the in extreme conditions might.
Depending on your dog type, you get both of you kitted out in in good weather proof gear.
I have a diva greyhound, she has a fur lined waxed jacket and a snood for cold/rain.
She has a thick fleece coat for cold days
A light rain jacket for summer showers
a gold puffer jacket just because
She also has balm for her paws
Wouldnt take her out in snow.
Various pjs
She has a cool/wet top for summer months
Dont take her out on hot days
I have wellies, waterproof jacket, waterproof hiking boots, various fleeces etc
In short, dont get a greyhound they need a bigger wardrobe than you