The heat, its accompanying colds and allergic episodes are all appetite suppressants, which may be good for those wanting to lose a few pounds. Eating may turn off people because the body heats up some more as it digests the food. Still, people should be concerned about keeping cool this summer lest they suffer from heat exhaustion or worse, heat stroke.
Hydrating is key. You can drink just plain water or add some zest to it by adding slices of lemon to your cold pitcher of water. Fruit juices are also great as they contain vitamins and minerals (and maybe electrolytes). Drink tea and coffee in moderation, however, as these are diuretics.
Watery fruits like watermelon and jicamas and melons will be great snacks. Even cucumber sticks are sure to refresh you. Iced treats of fresh fruits in season is also ideal. And of course, ice cream (though I read recently that preggos may want to avoid ice cream because they might not tolerate the milk in it as pregnancy hormones sometimes result in lactose intolerance).
And for iced treats with milk, how does one make them more creamy? Add a tablespoon or two of powdered milk!