Spring is here, the roads are clear of snow and ice and the snow on the ground is starting to melt away. Now it is time to pick up my new 997S. The question is ... when is it safe to drive on summer tires(PS2's)

Mornings are still cool and below 0C, daytime temps are above freezing, but still not warm (4C). So knowing that the summer tires are not recommended for temps below 7C, am I asking for trouble driving the car in these temps at break in speeds?