Tucson Climate and Weather

Tucson experiences a desert climate where temperatures are moderate and rainfall is too low to sustain any vegetation at all. The two major seasons, namely summer and winter, with three minor seasons; autumn, spring and the monsoon. Summer months experience low humidity and clear skies with daytime highs reaching 100°F (37°C) and average overnight temperatures ranging between 66°F (19°C) and 85°F (29°C). Winters are mild with average daytime highs between 64°F (18°C) and 75°F (24°C). The monsoon season runs from June to August and sees very high humidity with thunderstorms and occasional flash floods.