unusually, uncommonly
Estuvo inusualmente frío anoche.
It was unusually cold last night.
La pasada noche fue inusualmente fría.
Last night was unusually cold.
Es inusualmente frío para agosto.
It is unusually cold for August.
— El tiempo contigo (2019)
No hagas nada inusualmente estúpido.
Don't do anything unusually stupid.
— Avatar (2009)