Aviation abbreviation

HIEFM

HIEFM stands for “highest temperature equaled for the month” (Weather usage). Got a NOTAM full of contractions? Paste it into the decoder.

Related abbreviations

HIHIALSHIBALHIEATHIESEHIESLHIFORHIRIVHIRLHITMPHIWASHIXAT

Source: FAA Order JO 7340.2 Contractions. Not for operational use.