Short-term effects. When a person smokes marijuana, THC quickly passes from the lungs into the bloodstream. The blood carries the chemical to the brain and other organs throughout the body. The body absorbs THC more slowly when the person eats or drinks it. In that case, the user generally feels the effects after 30 minutes to 1 hour.
As the season progresses, the earth's axis increases it's tilt towards the sun in preparation for summer. When spring ends in the northern hemisphere, we have the summer solstice ie the beginning of summer, which is the longest day of the year and when the earth's axis is tilted towards the sun.
That would seem to sum it up, but there is more to climate in the desert. First, there is more than one type of desert. We will consider two desert types, subtropical (hot) and temperate (cold). The ranges for temperature and precipitation are shown in the figures below. Note that in both cases precipitation is low, less than 100 cm per year. At the higher end of this range, most of the precipitation tends to fall during one season, with the effect that water is in short supply for much of the year.