Here is my thumbnail summary. June is really hot, especially late June. There are four hot months, June through September. May can be hot, but it is generally quite tolerable. So you get 8 months of great weather. April and October-November are fantastic.
High pressure areas in the northern hemisphere (sometimes called "anticyclones) have winds that rotate clockwise around them and are usually clear weather.
The base of the stratosphere (top of the troposphere) is about 19,000 feet. ??? It is rare that clouds reach above the top of the troposphere, but sometimes big thunderheads (cumulonimbus) do.
Tom's Weather Resources / firstname.lastname@example.org