The majority of this total solar eclipse takes place over the contininental USA. August is an excellent month for solar eclipses in the USA. Over much of the eclipse path a typical August day is hot and humid with a potential for late afternoon rain showers. The cooling effect of the eclipse shadow may cause some clouds to form in areas of very high humidity. The maximum duration of the eclipse is just over 2 minutes and 41 seconds in southern Illinois near Carbondale. It should be noted that Greatest Eclipse occurs near Hopkinsville Kentucky, a little over 100 miles further along the eclipse path. Duration is slightly shorter at the Greatest Eclipse point due to the lunar profile.