Seasons Wet Season • Our fall and winter. • Deserts have lowest temperatures in this time. • Deserts receive the most rainfall in the wet season. Dry Season • Our spring and summer. • Hottest weather in the desert in the dry season. • Little to no rain in the months of the dry season. Temperatures • There is a very wide temperature range in the desert. • Can reach as high as 110° F. • At night, the desert can drop to 32°. Temperature Graph Precipitation • About 10 inches total per year. • Winter and fall is when most of the precipitation falls. • The dry season, (summer and spring) receives a small percentage of the total rain fall. Precipitation Graph Humidity • In the day, humidity levels can be as dry as 20%. • At night, levels can rise to 100%, leaving a coat of dew on plants. Sunlight Totals and Wind Speed Sunlight Totals • In the summer, there is about 12 hours sunlight, 12 hours darkness. • It is roughly the same in the winter, because deserts are near the equator. Wind Speed • Wind speeds will vary based on each desert. • Wind speeds can be stronger the other biomes because there is little vegetation to slow down the wind. • Heavy winds can cause sand drifts (sand dunes) and sand storms. Effects on Organisms Plants • Causes many plants to adapt. • Cacti store water in their stems. • Many bushes have few leaves. • Many different plants have a large root system to absorb water. Animals • The intense climate causes the desert to be uninhabitable by many animals. • The animals that can survive in the desert have adapted to cool themselves.