However, itâs also a time to be aware of the dangers soaring temperatures can bring. Extreme heat is the number one weather-related killer in the U.S, claiming more than 650 lives across the nation each year, according to the Centers for Disease Control and Prevention.
1 In a bowl whisk together garlic, extra virgin olive oil, balsamic, 1/4 cup red wine, 1 tablespoon chopped rosemary, salt and pepper.  Place flat iron steak in a resealable plastic bag. Pour marinade over the top. Shake to coat steak in marinade. Refrigerate for 8 hours or overnight.
When you grill a steak, only flip it once, otherwise you wonât get those beautiful char marks that you are looking for. Each side of the steak should take only 2 to 4 minutes to cook. Let your steaks rest after grilling before you slice them, about 5 to 15 minutes. If you skip this step, the fluids will not be absorbed by the meat, and you will have dry, runny steaks rather than juicy meat.