Our actual temp today was 105...I think I heard that the heat index was 112...so we know all about hot. Some things we do to beat the heat and save our sanity - water play...sprinkler, pool, water balloons, splash parks...anything wet!!! Don't forget the sunscreen.
Play early. It's still hot, but not unbearable. We went to the park the other day at 8 a.m. so they could play and run around.
A few of the malls around here have indoor playgrounds...yay. But we have been know to go walking around malls with no play ground, just to get out of the house. :)
Do a search for indoor playgrounds in your area. I was quite surprised to find so many in our area...a lot of them are sponsored by churches and they are usually a dollar per kid or free.
I keep an eye on chuck e cheese coupons. Sometimes they have fantastic deals. And although it's definitely NOT my fave, sometime you do what you gotta do. :)
Pet store can be air conditioned fun. MY kids love to look at the animals. We also visit some of the sporting goods stores (cabelas and bass pro) to watch the fish and look around.
Play dates. I have a few friends and we trade hosting. Sometimes playing with different kids can break up the monotony.
Story time...we have been known to visit multiple libraries during the week. Some libraries host a craft with the story and have a child play area.
Check out museums. We wound up buying a membership to our local science museum. It's very reasonable and we love that we can go for just a few hours and not feel like we have wasted anything. One of our art museums used to be free on Wednesdays. It was all modern art...so my little ones enjoyed some of that too.
Boxes have also saved me more than once...my kids will play in a large box for hours. Sometimes an old empty diaper box is all they need. :)
GL!
Stay cool!