I am living in Atyrau for about 6 years. The weather condition in the summer + 42 , in the winter is about - 15.
It is a little town, population is 350000 people, but here a lots of foregners, from EU,US,Canada working for oil projects (AgipKCO,TCO).
Not so much places to visit, but if you will stay a short time you will enjoy it.
If you will get the contract with Air Astana probably you will live in Renessance hotel, which is pretty nice.
If you have more questions pls contact any time