Can air-superiority radar function as weather radar?
Modern airborne fire-control radars seem to have a weather mode.

GRIFO-346, VixEn 1000E, and ELM-2032 (brochure PDF links).

This page suggests a "weather observation" capability in modern combat planes:


  Digital capabilities allow a radar to change its functionality at will, resulting in the modern "multimode radars" carried by combat aircraft.