Yeah & if it is over 30°C from Italy all the way to the final ITT (with a heatwave ala 2003 again), then Pog won't win the Tour.
Heat is a factor, as you also pointed out in an earlier post. And given the climate trend heat waves in France are more and more likely with every passing year. Cold, rainy Tour (like Giro) aka Teddy's dream is utopia. However, 1 or 2 cold days in the mountains would definitely favor him. While I do think he bears the heat better than it's thought (he showed it during some of last year's stages i.e. on Puy de Dome) a prolonged period of hot weather is a factor, which (coupled with the Giro in his legs) can lead to fatigue later in the race.