Cabin Fever....summer style

I used to think that cabin fever was relegated to only winter months. The heat, my gosh, the HEAT has kept us inside much more than I remember in years past. This is the first summer that Savvy has been able to tell us what she wants and throw monster tantrums when she doesn't get it. Savvy wants to "go outside" all the time, and since we don't have a fenced yard, April or I have to be out there with her. I wonder if temperature has a different effect on little ones than adults?

If you have wisdom to impart to me, let me have it. We really enjoy the new Jump Zone, but their hours are so limited. They aren't even open to the general public on Saturdays! Play World is all right, but can get pricey and crowded. All the parks and trails in Arkansas are great, but the forecast for Monday is 103 degrees and not much less for the rest of the week. Help!