General Weather Conditions by season
Spring: Mid-March through April, warm days and cool nights, great hiking.
Early Summer: May is warmer and very comfortable, idyllic.
Summer: June, July and August, hot days and mild nights, swimming and mid-day siestas.
Autumn: Mid-September, October and November, splendid cool weather with fall foliage.
Winter: December to March, the quiet season, with occasional snows, beautiful!
Links to Moab weather sites