Daytime temperatures in excess of about 105 to 110F, with or without nightime temperatures in excess of 85F have been described as associated with increased losses of fruiting positions in more heat-sensitive Acala cotton varieties. During two periods (years) with repeating high daily peak temperatures over two weeks or more duration, fruit retention and plant water status were monitored to evaluate impact of mild to moderate water stress on fruiting responses to prevailing temperature conditions. Field temperature conditions were monitored at intervals, plant water status was measured using IR thermometry and leaf water potentials, and date of matchhead square formation and subsequent retention or abortion of fruiting sites was monitored across several varieties.