Preparation for high temps???

[spyfferoni]

My toms are finally doing good after a late frost and marble size hail, and the forcast for Saturday is 101. Is there anything I can do to help them through the heat? How much blossom drop should I expect? My plants are loaded with blossoms and only 2 plants so far have set any fruit. I planted them in black plastic, so that will keep the moisture in, but may add to the heat problem. Any suggestions???

Thanks,
Tyffanie