un·sea·son·able 
/ˌʌnˈsi:zn̩əbəl/ adjective
/ˌʌnˈsi:zn̩əbəl/ adjective [more unseasonable; most unseasonable] of weather : not normal for a certain time of year : not seasonable
▪ unseasonable weather ▪ Temperatures have been unseasonable.
▪ unseasonable weather ▪ Temperatures have been unseasonable.
— un·sea·son·ably /ˌʌnˈsi:zn̩əbli/ adverb
▪ The weather has been unseasonably cool.
/ˌʌnˈsi:zn̩əbli/ adverb ▪ The weather has been unseasonably cool.
