Day 19 – 9/18 Yellowstone: Old Faithful, Grand Prismatic, West Thumb It’s 33F outside this morning, but it is not as cold as we felt in Rapid City inside, so I think the fast temp drop impacts the inside temp much slower, so our stay here will be fine even when… Read more → Share this: Share on Pinterest (Opens in new window) Pinterest Share on Facebook (Opens in new window) Facebook Share on WhatsApp (Opens in new window) WhatsApp More Share on X (Opens in new window) X Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print