The trend for suppressing spread in the US isn't so much hot weather, it's temperate weather. Any time people are comfortable being outside, there's less sprea

The trend for suppressing spread in the US isn't so much hot weather, it's temperate weather. Any time people are comfortable being outside, there's less spread. When it gets too hot for that (the South and Southwest over the summer) or too cold (the North, broadly, now) we see lots more spread. Don't know if this trend holds outside the US.