Yea I'm not entirely sure. I see that Baikonur doesn't get a lot of precipitation, but that doesn't explain Amur Oblast which looks comparable to a place like C

Yea I'm not entirely sure. I see that Baikonur doesn't get a lot of precipitation, but that doesn't explain Amur Oblast which looks comparable to a place like Cleveland in terms of temperature and precipitation. I have to imagine that even if weather wasn't a concern (again no idea here just enjoying the discussion) - it would cost pretty much the same to build and launch from the Gulf Coast, so long as you don't get hurricane-d, and you can launch year-round (can you launch in snow?).