HUMIDEX

- A measurement used by Canadian meteorologists to reflect the combined effect of heat and humidity, as the apparent temperature felt by a person.

H4 - U1 - M3 - I1 - D2 - E1 - X8 has 20 points in Scrabble!

H3 - U2 - M4 - I1 - D2 - E1 - X8 has 21 points in Words with Friends!

Found in the OTCWL2014 and SOWPODS dictionaries