claim: Some of the regions in which  GRACE claims ice loss in East Antarctica average colder than -30°C  during the summer, and never, ever get above freezing.
evidence: The temperature in Antarctica has reached −89.2 °C ( −128.6 °F ) ( or even −94.7 °C ( −135.8 °F ) as measured from space ), though the average for the third quarter ( the coldest part of the year ) is −63 °C ( −81 °F ).