The most changeable month of the year is March; snow can fall on any day, especially at higher elevations. Hikers are often caught off-guard when a sunny day around 70ºF or a little more is followed by a wet, bitter cold day. By mid to late April, the weather is moderate.
Heat, haze, and humidity are the norm by mid-June. Much precipitation comes from afternoon thundershowers.
In mid-September, a pattern of warm, sunny days and crisp, clear nights often begins. However, cool, rainy days also occur. Dustings of snow may fall at the higher elevations in November.