I would imagine in the wintertime, if it didn’t rain, the water would eventually evaporate above freezing, or sublimate below freezing.
I know that on my patio and sidewalk, after I shovel away the snow, there’s still some left that over the next few days, even when the weather is cloudy and below freezing, eventually disappears.
If my grandmothers were still around, I'm sure they'd tell me that's exactly how it works.