We went out to Moab, Utah for the holiday weekend at the end of May. I have never been to Moab on an overcast, rainy weekend but this turned out to be the most visually dynamic trip I've ever taken out there. In contrast to the harsh, direct light that is typical of Moab in Spring, the clouds acted like a soft box and the colors of the red rock and wild blooms changed as the sky changed throughout the day.
We camped in the desert outside of Moab and arrived just in time for the sky to clear up for a brief moment. I saw the Milky Way splashed across the sky and a meteor shower sparkling and streaking above me until I couldn't keep my eyes open any more. The second day it rained like crazy, with all six of us hiding in a car during a torrential downpour with epic lightening strikes. Right before the rain shower I took a quick walk with my sister-in-law and we photographed everything we saw blooming. Finally, on the third day it was overcast and cleared up around the time we left. We got to see the clouds rise out of the canyons, hiding just the very tops of the mesas and rock formations, forming islands in the sky.