I think the answer to that is "it depends". Depending on how high in the clouds the rain originates, it's temperature could be close to air temp down to below freezing (hail). A friend has pics from South Dakota a few weeks ago of hail that was baseball sized. The hail stuck around on the ground for almost 2 hours before it all melted, even with the rain that accompanied it. The air temp was in the high 80's before the storm.
