Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
balmy [ˈbɑːmɪ] adj (breeze) ласка́ющий/ласка́ющ (day) прия́тный*прия́тен (BRIT) (inf) = barmy
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.