Rhododendron Blooming - Snow in Forecast?

I've been watching this rhododendron for a few days and woke up to it in full bloom. It's gorgeous, isn't it?

Then I went and checked the forecast and saw this:  Seriously? Snow in May? Now I've lived in New England most of my life and know the weather can boomerang around a lot. I'm used to fifty-degree swings and all, but come on. It's May. April showers were supposed to bring May flowers, not a chance of snow!

Update: We hovered near the freezing point for a while and the rain came pelting down, but I never saw any white flakes.