Heat Sunday was not confined to to the Interior. Much of the North Slope was hot too, except where a cooling sea-breeze keep it more pleasant.
Ivotuk: 77F (SW of Umiat)
Inigok: 76F (NW of Umiat)
Point Lay: 72F
Marsh Creek: 71F (SE of Prudhoe Bay)
Ikpikpuk: 68F (well NW of Umiat)
Barrow held at 56F thanks to the sea-breeze. 900' up on the 00Z RAOB it was 66F.