The Washington Post has a good poll question on their site:
This is actually a legitimately tough question.
The current temperature in D.C. is around 94 degrees. At game time, it's expected to hit 95.
Strasburg, meanwhile, has been clocked as high as 101. If he throws a fastball to start, I can see him topping 95 easily.
We've got a few sites for you if you're interested in Strasmas: Royals Review, Federal Baseball and SB Nation D.C.