An amber weather warning is in place with more wintry showers expected throughout this afternoon and into this evening.
It's thought it will fall as sleet or hail to low levels, and snow over hills above 300ft - snow may fall on lower ground depending on the intensity of the showers.
Further slight snow accumulation of up to 2cm is possible in some places.
Surface temperatures are expected to fall below zero from around 5pm, leading to widespread ice developing on untreated surfaces.
It's expected to remain sub-zero over the hills until at least late tomorrow morning.
Government: "UK never told us about child murderer"
Farm shop's newest worker needs your name suggestions
Bus Vannin gives update on staffing problems and routes affected today
Toilets vandalised for fourth time in a month
Poppy gets fur-ever home after sparking rescue operation in Douglas
Council gets eight complaints about James Brown in six months
More bus staffing problems this weekend
Manx community spirit shines through during Island storms