+55-56C is about is the hottest AIR temp you'll get globally. Pretty common to see telecomm gear that falls in line with this max temp. The +55C does not include heat from direct sunlight/insolation. Unless rated for much higher temps, you'll need a sun shade for your gear out in the field. Problem with Starlink is that with a sun shade you'd most likely lose line of sight to the sats or attenuate the signal badly.