I'll give it a gander!
Version: Emerald [It makes me sad to see no one has done a gen 3 run yet ]
Degree Range: 15 degrees Celcius/59 degrees Fahrenheit and below
For those of you who are not familiar with gen 3, because I am playing Emerald, I do not have access to Roselia or Surskit, as well as a few other pokemon, but they are unrelated to my challenge. I do, however, have access to a variety of Johto and Kanto Pokemon including Skarmory, Chincou, Zubat, Koffing, Grimer, and a few others. If you really care that much, go look them up for yourself.
Can't Wait To Get Started!!!