I went out right after the rain started and the air was already noticeably warmer than it was around 10. The rain was a lot warmer than the air and didn't even leave a glaze on an upside-down metal canister I use in the garden. I'm sure it glazed stone ground surfaces but probably not for long. Already warm rain falling through quickly warming air got warmer and the ground wasn't cold enough to beat it.
Yup, snowcover is fading fast.