Snow in Late May

We've had such a cool and wet spring.  It's been only in the 40s or 50s as the high temperatures and it's been raining  5 or 6 days out of the week for several weeks.  It feels like we live in Seattle instead of the high dessert.  There's been mudslides and several inches of snow have continued to accumulate in the mountains.  Still, I was shocked when I  went downstairs! this morning for coffee and saw snow on the back deck.  Not a lot,  but wow, it's May 20th!