The weather in the Bosnia
region resembles that of the southern Austrian highlands generally mild,
though apt to be bitterly cold in winter. In
Banja Luka the coldest month is January,
with an average temperature of about 32 F, and the warmest month
is July, which averages about 72 F.
Serbian, Croatian and Bosnian are closely related, mutually
intelligible Southern Slavonic languages formerly known collectively as
Serbo-Croat. They have about 18.5 million speakers, mainly in Serbia,
Croatia, Bosnia and Herzegovina and Montenegro.
The Marka (BAM or KM), also known as the convertible
mark, is the official currency of Bosnia.