Effect of Hot/Cold scales

[Shovah32]

Also, remember that with the exception of a few nations/units enemy armies will also be affected by heat so taking heat1 or 2 for points may not be too bad an idea, even more so if you have low enc troops(i suggest heat rather than cold because, iirc, more enemies are likely to benefit from your cold than your heat)

[Teraswaerto]

If a nation has heat or cold preference, I'll usually take 3 heat/cold, as provinces don't have 3 temperature most of the time no matter what.