Lindsay, I m terribly bothered by the heat too. As soon as it goes above 70 degrees, I can feel the effect. And the hotter it gets, the worse I feel. I keep the house really cold all year. In the winter I set the temp to 58 degrees and in summer to 72. I live on PA and have already had the air conditioner running daily for several weeks. Next week it is suppose to get up to 88 degrees and I am dreading it. When it get really bad, I put zip lock baggies of ice on the effected muscles and it helps. I take luke warm showers all year. Warm showers just drain all the strength from me. Even cooking, folding laundry from the hot dryer or doing the dishes with warm water affect my MG.

I hope you find relief from the heat.
kathie