Weather information for the Great Sand Dunes NP area is provided below. Average temperatures, climate details and current forecasts are included.
In fall, winter, and spring, expect moderate daytime temperatures and freezing to sub-zero temperatures at night. Summer temperatures during the day average 70 to 80 degrees; lows may drop to 40 degrees. Sand temperatures can reach 140 degrees in summer; shoes are highly recommended for hiking the dunes.